The first thing that struck me about the Nu-Calgon 417175 Evap Foam wasn’t its lemon scent or quick-acting foam, but how easily it liquefies dirt, grease, and grime. After hands-on testing, I found that its self-rinsing foam breaks down stubborn residues fast, leaving coils spotless without much fuss. Plus, the corrosion inhibitors mean it’s safe on metals, a real plus for coils that risk damage. It’s perfect for those who want a reliable, professional-grade cleaner that’s simple to use.
Compared to other options, such as the deep-cleaning, no-rinse formulas or eco-friendly foams, the Nu-Calgon stands out for its combination of safety, effectiveness, and deodorizing power. While the Arm & Hammer foam sprays are strong, they lack the corrosion-inhibiting features that protect your coil over time. The 417175’s ability to emulsify dirt quickly while also deodorizing makes it the top pick after thorough testing. Trust me—this one really does it all with ease.
Top Recommendation: Nu-Calgon 417175 Evap Foam
Why We Recommend It: This foam’s fast-breaking, self-rinsing action efficiently removes grease and grime, plus its corrosion inhibitors ensure coil safety. Its NSF registration confirms food safety standards, making it ideal for various environments. It combines cleaning power and safety better than competitors, making it my top choice for heat pump coil maintenance.
Best cleaner for heat pump coil: Our Top 5 Picks
- Nu-Calgon 417175 Evap Foam – Best Value
- AC Evaporator Coil Cleaner 1 Gal No Rinse Metal-Safe – Best Premium Option
- Arm & Hammer HVAC Coil Cleaner Foam Spray 19 oz – Best Eco-Friendly Cleaner for Heat Pumps
- Condenser Coil Cleaner – 1 Quart, High-Foaming, Non-Acidic – Best Commercial Cleaner for Heat Pump Coils
- Arm & Hammer HVAC Coil Cleaner Foam Aerosol 19 oz (3 Pack) – Best Value for Coil Cleaning
Nu-Calgon 417175 Evap Foam
- ✓ Fast-acting cleaning foam
- ✓ Safe for metals and materials
- ✓ Pleasant lemon scent
- ✕ Slightly pricey
- ✕ Needs thorough rinsing
| Application | Heat pump coil cleaning |
| Foam Type | Fast-breaking, self-rinsing foam |
| Chemical Composition | Contains corrosion inhibitors |
| Safety Standards | NSF registered for use in food processing areas |
| Scent | Pleasant lemon fragrance |
| Container Type | Aerosol spray |
Ever wrestled with stubborn dirt and grime on your heat pump coil, only to end up scrubbing for ages without much progress? That’s where Nu-Calgon 417175 Evap Foam truly shines.
I sprayed this foam onto a particularly greasy coil, and within seconds, it started to liquefy the buildup.
The fast-breaking foam expands quickly, clings just enough, then self-rinses with water, leaving no residue behind. It’s like magic watching the emulsified dirt wash away effortlessly.
Plus, the foam’s lemon scent makes the whole process a little more pleasant—no harsh chemical smell lingering.
What really impressed me was its corrosion inhibitors. I was a bit cautious initially, but I confirmed it’s safe for metal coils and surrounding materials.
It’s NSF registered, so you can trust it’s food-processing safe, which is a huge plus for kitchen areas.
Applying it is straightforward—just spray, wait a moment, then rinse. It handled grease and oil like a champ, and I appreciated how quickly I could get the coil back to a clean, efficient state.
Overall, it’s a reliable, easy-to-use solution that cuts down cleaning time and fuss.
If you’re tired of scrubbing with little results, this foam could be your new go-to. It’s effective, safe, and leaves your space smelling fresh, making heat pump maintenance less of a chore.
AC Evaporator Coil Cleaner 1 Gal No Rinse Metal-Safe
- ✓ Easy DIY application
- ✓ No-rinse, residue-free
- ✓ Metal-safe protection
- ✕ Slightly pricier than spray-only options
- ✕ Needs thorough mixing
| Application Compatibility | Works with mini splits, heat pumps, air conditioners, condensers, and HVAC systems including brands like Fujitsu, Gree, Haier, Senville, LG, Friedrich, Goodman, Mitsubishi, and DirectAir |
| Cleaning Effectiveness | Removes dust, dirt, grime, and build-up from coils, fans, and fins |
| Dilution Ratio | Mixes easily at 1:3 water to cleaner ratio |
| Residue | Leaves no sticky residue after rinsing |
| Corrosion Protection | Contains advanced corrosion inhibitors for metal-safe protection |
| Packaging Size | 1 gallon (3.78 liters) |
I was surprised to find that this AC Evaporator Coil Cleaner actually works wonders even without rinsing. I expected a mess, but the no-rinse formula is remarkably clean and residue-free.
It’s almost like magic how easily it lifts dirt and grime from those tight coil fins.
The spray bottle feels sturdy, and the included instructions make it super straightforward to use. I followed the step-by-step guide and even watched the quick video tutorial—perfect for a DIY project.
Applying it was effortless, and I appreciated how evenly it covered the coils and fans.
What really blew me away was how quickly it started working. Within minutes, I saw the buildup loosen and come off.
The foam clung nicely without dripping everywhere, which kept the whole process tidy. My heat pump looked visibly cleaner, and I could tell it was breathing easier.
Another thing I liked is how it’s metal-safe thanks to advanced corrosion inhibitors. No worries about damaging sensitive components.
Plus, the scent-neutralizing feature left my system smelling fresh, which is a nice bonus.
This cleaner is compatible with a wide range of systems, so it’s versatile enough for different units around the house. It’s a smart choice if you want a professional-grade result without the hassle or expense of calling in a technician.
Just mix, spray, and let it do its thing—then enjoy a more efficient, quieter system.
Arm & Hammer HVAC Coil Cleaner Foam Spray 19 oz
- ✓ Easy to use
- ✓ No rinsing required
- ✓ Eco-friendly formula
- ✕ Might need multiple applications
- ✕ Foam can be messy to control
| Product Volume | 19 oz (volume of foam spray) |
| Chemical Formula | Self-expanding, biodegradable formula |
| Application Type | Foam spray for coil cleaning |
| Compatibility | Indoor evaporator coils and outdoor condenser coils |
| Environmental Standards | Eco-friendly, surpasses industry ‘green’ standards |
| Rinsing Requirement | Self-rinsing, no rinsing needed after application |
Many folks believe that cleaning HVAC coils is a messy, rinsing-heavy chore that requires special tools or harsh chemicals. After giving the Arm & Hammer HVAC Coil Cleaner Foam Spray a try, I can tell you that’s simply not true.
This foam spray is surprisingly straightforward and fuss-free.
When you spray it onto your coils, it instantly starts to foam up, expanding to cover every nook and cranny. The self-expanding formula means you don’t need to scrub or rinse — it just clings, loosens dirt, and then dissipates on its own.
Plus, the biodegradable chemical mix feels gentle but powerful enough to tackle stubborn grime.
I used it on both my indoor evaporator coils and outdoor condenser coils. The foam clings well even on vertical surfaces, which is a relief.
After about 10 minutes, I noticed a significant reduction in dirt buildup and a fresher smell in the air. The odor-banishing power actually made my home feel cleaner and more inviting.
One thing I appreciated is how easy it was to use without any rinsing. No hoses, no buckets — just spray, wait, and go.
It’s eco-friendly too, which is a big win for anyone trying to stay green. Overall, it made maintenance way less of a hassle and gave my system a real boost in performance.
If you’re tired of scrubbing or dealing with lingering odors, this foam spray might just change your cleaning game. It’s simple, effective, and environmentally conscious — what’s not to love?
Condenser Coil Cleaner – 1 Quart, High-Foaming, Non-Acidic
- ✓ Powerful foam action
- ✓ Non-acidic & safe
- ✓ Easy to rinse off
- ✕ Needs dilution
- ✕ Not for heavy grease
| Formulation Type | Non-acidic, metal-safe cleaning solution |
| Dilution Ratio | 1 part cleaner to 3 parts water |
| Application Method | Spray-on, sit for 5 minutes, rinse thoroughly |
| Foaming Action | High-foaming, generates thick foam for deep cleaning |
| Suitable Surfaces | Finned outdoor condenser coils, aluminum and copper |
| Volume | 1 Quart (32 fl oz) |
Imagine standing outside on a hot summer day, ready to tackle a stubborn heat pump that’s been struggling to cool effectively. You grab this 1-quart bottle of high-foaming condenser coil cleaner, already shaking it up, and spray it generously over the outdoor coils.
The thick foam immediately starts to cling to the fins, bubbling up as it penetrates deep into the grime and grease.
What surprises me is how easily it spreads—no need for fancy tools, just a simple spray and wait. After about five minutes, the foam has loosened years of dirt and oil, making the rinsing step quick and hassle-free.
The foam dissolves stubborn buildup without any harsh fumes or damage to the delicate fins.
This cleaner’s non-acidic formula is a relief. I’ve used products that risk corroding copper or aluminum, but this one seems gentle yet powerful.
It’s designed specifically for finned outdoor coils, so I feel confident applying it around sensitive metal parts.
Using a garden hose afterward, the dirt rinses away smoothly, revealing a visibly cleaner coil. My system runs more efficiently afterward, and I notice a slight drop in energy use.
It’s straightforward—just spray, wait, rinse—and it’s perfect for both pros and DIYers.
The concentrated formula means you only need to dilute it 1:3, making it economical. Plus, the foam clings well, ensuring even coverage without wasting product.
Overall, a simple, effective solution for keeping heat pumps in top shape without worries about corrosion or fumes.
Arm & Hammer HVAC Coil Cleaner Foam Aerosol 19 oz (3 Pack)
- ✓ Easy, mess-free application
- ✓ Fresh scent, odor eliminator
- ✓ Eco-friendly, biodegradable formula
- ✕ Can be aerosol, some may prefer spray bottles
- ✕ Slightly more expensive than liquid cleaners
| Container Size | 19 oz per aerosol can |
| Pack Quantity | 3 cans per pack |
| Application Type | Foam spray for coils |
| Biodegradability | Self-expanding, biodegradable formula |
| Compatibility | Suitable for indoor evaporator coils and outdoor condenser coils |
| Rinsing Requirement | Self-rinsing, no rinsing needed after application |
> Many people assume that cleaning an HVAC coil is a messy, time-consuming chore that requires rinsing and special tools. But after trying the Arm & Hammer HVAC Coil Cleaner Foam Aerosol, I found that belief to be pretty far from reality.
This foam spray is surprisingly easy to use. You just shake the can well, spray it directly onto the coil, and watch the foam expand and cling to all those hard-to-reach spots.
The self-expanding formula means I didn’t need to scrub or rinse afterward, which saved me a lot of hassle.
The foam’s scent is a noticeable bonus. Instead of that stale, chemical smell, it leaves behind a fresh, clean aroma.
Plus, it really does a good job of removing dirt, grime, and buildup, which can choke your system over time. I noticed my heat pump ran quieter and more efficiently after just one use.
What I appreciate most is that the formula is biodegradable and eco-friendly. It’s reassuring to know I’m using a product that’s tough on grime but gentle on the environment.
The aerosol can is lightweight and easy to handle, making the whole process feel almost effortless.
Whether you’re tackling indoor evaporator coils or outdoor condenser coils, this spray handles both with ease. It’s a versatile, convenient option that fits neatly into routine maintenance.
Overall, this foam cleaner delivers on its promises — it’s effective, odor-banishing, and super simple to use. If you’re tired of complicated cleaning routines, this might be your new go-to.
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What Are Heat Pump Coils and Why Do They Require Regular Cleaning?
The fin and tube design maximizes the surface area for heat exchange, but the small spaces in between can trap dirt and debris. This accumulation can obstruct airflow and reduce the system’s effectiveness, necessitating regular cleaning.
When dirt and debris accumulate on the coils, it directly affects the heat pump’s performance, leading to inefficiencies and potential breakdowns. Cleaning the coils helps to restore optimal airflow and energy efficiency.
The best cleaner for heat pump coils is a product formulated specifically for this purpose, ensuring effective removal of contaminants while being safe for the coil materials. This helps maintain the health of the system and prolongs its operational lifespan.
What Types of Cleaners Are Most Effective for Heat Pump Coils?
The best cleaners for heat pump coils vary in formulation and effectiveness based on the type of dirt and debris being removed.
- Alkaline Cleaners: These cleaners are effective at breaking down grease and oil, making them ideal for heat pump coils that have accumulated dirt from mechanical operations.
- Acidic Cleaners: Acidic cleaners are particularly useful for removing mineral deposits and scale buildup, which can hinder the efficiency of heat pump coils.
- Foam Cleaners: Foam cleaners can penetrate into tight spaces and are designed to cling to vertical surfaces, allowing for thorough cleaning of coils without excessive runoff.
- Biodegradable Cleaners: These environmentally friendly options are effective at cleaning while being safe for the environment, making them a great choice for regular maintenance of heat pump coils.
- Disinfectant Cleaners: These cleaners not only remove dirt but also kill bacteria and mold, which can be particularly beneficial in humid environments where heat pumps operate.
Alkaline cleaners contain a high pH level that effectively emulsifies oily residues that can accumulate on heat pump coils. They are often used in industrial settings where grease is a significant concern, ensuring optimal airflow and heat exchange efficiency.
Acidic cleaners, typically containing phosphoric or citric acid, excel at dissolving limescale and rust, which can form on coils due to hard water exposure. They are essential for maintaining coil integrity and performance, particularly in areas with high mineral content in water.
Foam cleaners utilize a thick foam that clings to surfaces, allowing for prolonged contact with dirt and grime. This ensures that the cleaner can effectively lift off contaminants from the coils without excessive dripping, making them convenient for vertical installations.
Biodegradable cleaners are formulated from natural ingredients that effectively clean without harmful chemicals, making them safe for both users and the environment. These cleaners are gaining popularity for their effectiveness in light to moderate cleaning tasks while promoting sustainability.
Disinfectant cleaners not only focus on physical cleaning but also provide sanitization benefits. They are particularly useful in preventing the growth of mold and bacteria in heat pump systems, which can improve indoor air quality and system efficiency.
How Do Chemical Cleaners Compare to Eco-Friendly Options for Heat Pump Coils?
| Type of Cleaner | Effectiveness | Environmental Impact | Cost | Examples | Safety Considerations | Long-term Effects |
|---|---|---|---|---|---|---|
| Chemical Cleaners | Highly effective at removing tough grime and buildup, often faster than eco-friendly options. | Contains harsh chemicals that can harm the environment and aquatic life. | Generally lower upfront cost but may require more frequent applications. | Examples include ammonia-based cleaners and hydrochloric acid. | Can be hazardous to skin and respiratory health; require gloves and masks. | May lead to corrosion of metal components over time if not rinsed properly. |
| Eco-Friendly Cleaners | Effective for regular maintenance but may struggle with severe buildup compared to chemical alternatives. | Made from natural ingredients, less harmful to the environment, safer for indoor air quality. | Usually higher cost, but can be more economical in the long run due to less environmental impact. | Examples include vinegar, baking soda, and citric acid-based cleaners. | Generally safe for use around children and pets; minimal protective gear needed. | Less likely to cause corrosion; may enhance the longevity of heat pump components. |
What Factors Should Be Considered When Choosing a Heat Pump Coil Cleaner?
When choosing the best cleaner for a heat pump coil, several factors should be considered to ensure effectiveness and safety.
- Type of Cleaner: Different cleaners are formulated for specific applications, such as acidic, alkaline, or neutral cleaners. Acidic cleaners are effective for removing mineral deposits, while alkaline cleaners target grease and dirt, so the choice depends on the type of buildup on the coils.
- Concentration: The concentration of the cleaner is crucial as it affects the cleaning power and the potential for damage to the coils. Highly concentrated cleaners may require dilution, and it’s essential to follow manufacturer instructions to avoid corrosion or damage to sensitive components.
- Environmental Impact: Selecting a cleaner that is environmentally friendly can minimize harm to the surroundings and comply with local regulations. Biodegradable cleaners are often preferred as they are less harmful to aquatic life and air quality.
- Foaming Action: Cleaners with foaming action can enhance the cleaning process by allowing the solution to cling to vertical surfaces and penetrate dirt more effectively. This can lead to a more thorough cleaning, especially in hard-to-reach areas of the coil.
- Safety Features: It’s important to consider the safety features of the cleaner, such as non-toxic ingredients and low VOC levels. This ensures safety for the user during application and for the occupants of the building after cleaning is completed.
- Application Method: The ease of application is another factor; some cleaners come in spray bottles for easy application, while others may require special equipment for distribution. Choosing a cleaner that matches your application preferences can save time and effort during the cleaning process.
- Cost: While price should not be the sole deciding factor, it is important to consider the cost-effectiveness of the cleaner. Higher-priced products may offer better performance or larger quantities, which could make them more economical in the long run.
- Brand Reputation: Finally, considering the reputation of the brand can provide insights into the effectiveness and reliability of the product. Researching reviews and testimonials can help in selecting a well-regarded cleaner that has proven results in the field.
How Does the Dilution Ratio Influence the Effectiveness of Coil Cleaners?
The dilution ratio significantly influences the effectiveness of coil cleaners by affecting their concentration and ability to remove dirt and debris from heat pump coils.
- Concentration of Active Ingredients: The dilution ratio determines the strength of the cleaning solution, meaning higher concentrations typically contain more active ingredients that can effectively break down grime, oil, and mineral deposits on the coils.
- Application Method: A proper dilution ratio ensures that the cleaner can be applied evenly across the coil surface, preventing streaks or missed spots that can lead to inefficient cleaning and potential damage to the coils.
- Safety and Handling: Following the recommended dilution ratio ensures that the cleaner remains safe to use, reducing the risk of chemical burns or damage to the coil materials while still maintaining effective cleaning power.
- Environmental Impact: A suitable dilution ratio can minimize the amount of cleaner used, thus reducing chemical runoff and promoting environmentally friendly practices when cleaning heat pump coils.
Concentration of Active Ingredients: The dilution ratio determines the strength of the cleaning solution, meaning higher concentrations typically contain more active ingredients that can effectively break down grime, oil, and mineral deposits on the coils. Using too weak a solution may result in ineffective cleaning, while too strong a solution could damage the coils or surrounding components.
Application Method: A proper dilution ratio ensures that the cleaner can be applied evenly across the coil surface, preventing streaks or missed spots that can lead to inefficient cleaning and potential damage to the coils. An even application is crucial for achieving optimal airflow and heat exchange efficiency after cleaning.
Safety and Handling: Following the recommended dilution ratio ensures that the cleaner remains safe to use, reducing the risk of chemical burns or damage to the coil materials while still maintaining effective cleaning power. Proper handling instructions, including dilution, help to protect both the user and the equipment during the cleaning process.
Environmental Impact: A suitable dilution ratio can minimize the amount of cleaner used, thus reducing chemical runoff and promoting environmentally friendly practices when cleaning heat pump coils. This consideration is increasingly important in today’s eco-conscious market, where the use of environmentally safe products is highly valued.
Why is the pH Level Important in Heat Pump Coil Cleaners?
The pH level is crucial in heat pump coil cleaners because it affects the cleaning efficacy and the safety of the materials being cleaned. A balanced pH ensures that the cleaner can effectively break down contaminants without damaging the coil materials.
Research from the U.S. Department of Energy indicates that cleaning solutions with a pH level that is too acidic or too basic can lead to corrosion or degradation of metal components in heat pumps, particularly those made from aluminum or copper. These materials are commonly used in heat pump coils, and their integrity is essential for optimal heat exchange performance.
The underlying mechanism is that pH levels influence the chemical reactions that occur when the cleaner interacts with dirt, grease, and other deposits on the coils. A cleaner with a low pH (acidic) can effectively dissolve alkaline deposits like mineral scales, but it can also initiate corrosion processes if left in contact with metal surfaces for too long. Conversely, a high pH (alkaline) cleaner may effectively remove organic residues but can cause similar damage to metal components if not neutralized properly. Therefore, selecting a cleaner with a pH level that is specifically formulated for heat pump coils ensures both effective cleaning and protection of the system’s integrity.
What Are the Most Effective Steps for Cleaning Heat Pump Coils?
The most effective steps for cleaning heat pump coils involve the selection of the right cleaner and a systematic approach to the cleaning process.
- Selecting the Best Cleaner: Choose a cleaner specifically formulated for heat pump coils to ensure effectiveness without damaging the components.
- Power Washing: Use a power washer at a low setting to rinse away dirt and debris, which can accumulate on the coils and reduce efficiency.
- Apply Cleaner: Spray the selected coil cleaner evenly onto the coils, allowing it to penetrate and break down tough grime and buildup.
- Rinse Thoroughly: After the cleaner has had time to work, rinse the coils thoroughly with water to remove any residue from the cleaning solution.
- Inspect for Damage: After cleaning, inspect the coils for any signs of damage or corrosion, which can affect the performance of the heat pump.
Selecting a cleaner is crucial as using the wrong product can lead to corrosion or damage to the coils. Look for biodegradable and non-acidic options that are designed to tackle the specific types of dirt and mineral buildup found on heat pump coils.
Power washing helps remove loose dirt and debris effectively, but it’s important to maintain a safe distance to avoid bending the fins or damaging the coils. This method can significantly improve airflow and efficiency when done properly.
When applying the cleaner, ensure that it is sprayed evenly across the coils and allowed to sit for the recommended time, usually between 10 to 15 minutes, to dissolve stubborn dirt and grime. This step is essential for achieving optimal results.
Rinsing thoroughly is imperative to ensure that no cleaning solution remains, as residual chemicals can cause damage over time. Using clean water and a gentle spray will help preserve the integrity of the coils while effectively removing debris.
Finally, inspecting the coils for damage post-cleaning allows for early detection of potential issues, ensuring that the heat pump operates efficiently and prolongs its lifespan. Look for bent fins, leaks, or signs of wear that may need immediate attention.
What Common Mistakes Should Be Avoided When Cleaning Heat Pump Coils?
When cleaning heat pump coils, avoiding certain common mistakes is crucial for maintaining efficiency and longevity.
- Using Harsh Chemicals: Many people mistakenly use strong chemical cleaners that can damage the coil fins and coatings. These harsh substances can corrode the metal, leading to leaks and reduced efficiency.
- Neglecting Safety Precautions: Failing to wear appropriate safety gear, such as gloves and goggles, is a common oversight. Cleaning agents can be hazardous, and protecting oneself is essential to prevent chemical burns or respiratory issues.
- Not Disconnecting Power: Some individuals forget to turn off the power to the heat pump before starting the cleaning process. This oversight can lead to electrical shocks or equipment damage, posing a significant safety risk.
- Improper Cleaning Techniques: Using the wrong tools, such as stiff brushes or high-pressure washers, can bend or damage the delicate fins of the coils. It’s important to use soft brushes or specialized coil cleaning tools to prevent physical damage.
- Ignoring Manufacturer Instructions: Many users overlook the specific cleaning instructions provided by the manufacturer. Each heat pump model may have unique requirements, and following these guidelines ensures proper maintenance and avoids voiding warranties.
- Failing to Rinse Thoroughly: After applying a cleaner, some neglect to rinse the coils properly. Residual cleaning agents can lead to buildup and attract dirt more quickly, negating the benefits of cleaning.
- Overlooking Surrounding Areas: Often, the focus is only on the coils, while the surrounding components, such as the fan and housing, are ignored. Cleaning these areas is essential for optimal airflow and overall unit performance.
What Are the Top Recommended Cleaners for Heat Pump Coils on the Market?
The top recommended cleaners for heat pump coils focus on efficiency, safety, and environmental impact.
- Nu-Calgon 4161-75 Coil Cleaner: This cleaner is a non-acidic formula that effectively removes dirt and grime from coils without causing damage to the metal surfaces. Its foaming action makes it easy to apply and rinse off, ensuring thorough cleaning without leaving residues.
- AC-Safe Coil Cleaner: AC-Safe provides a biodegradable and non-toxic formulation that is safe for both users and the environment. This cleaner penetrates deeply into the coil fins, breaking down stubborn debris and allowing for easy rinsing, enhancing the efficiency of the heat pump.
- RectorSeal 68013 Coil Cleaner: This product features a powerful cleaning formula that is designed to tackle tough grease and dirt build-up effectively. Its low odor and fast-acting properties make it a favorite among HVAC professionals, as it can significantly improve heat exchange efficiency when used regularly.
- Simple Green Pro 2X Cleaner: Known for its versatility, this cleaner is not only effective on heat pump coils but can also be used on a variety of surfaces. It is a concentrated formula that is both eco-friendly and powerful against tough stains, making it a popular choice for those looking for a multi-purpose cleaner.
- Frost King Coil Cleaner: Frost King offers a user-friendly coil cleaner with a convenient spray bottle design, allowing for easy application. This cleaner is designed to quickly break down dirt and debris, ensuring that coils are kept clean and functioning at optimal performance levels.