Are you wondering? You're in the right place.

At Air Conditioning Express, we know that before calling on an expert, it is normal to want to understand, compare and feel fully confident. That's why this Frequently Asked Questions was designed for you — to answer your questions clearly and allow you to move forward in your decision with serenity. Imagine for a moment: a fluid service, a listening team and a comfort found in the first few days.

Doing business with us means choosing more than just a heating or air conditioning system.

It is opting for technical expertise, human support, and attention to detail that turns a simple installation into a real peace of mind. Our customers often tell us that they felt, from the first visit, that they were in good hands. What if you could experience exactly this experience, without any stress or surprise?

We firmly believe that a knowledgeable customer is a confident customer.

This is why we have gathered answers to the most frequent questions — from the most technical to the most practical — with clear, concrete and solutions oriented language. You are at a single decision of lasting comfort without hassle. Browse our FAQ, and be guided to the solution that best fits your daily life.

Our clients' most common questions

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing How to clean its heat pump regularly?

1. Clean the filters every 4 to 6 weeks: Open the inner unit hood, remove the filters, vacuum them or under warm water, and then let them dry well before putting them back in. 2. Clear the outer unit: make sure there are no leaves, snow or debris around the aircraft. Keep a free area of at least 30 to 60 cm around. 3. Check the ventilation grids so that they are not obstructed by dust or dirt, both inside and outside. 4. Clean the fins of the outer unit with a small soft water jet (no high pressure jet) or a soft brush, always cutting the feed before. 5. Pay attention to unusual noise or loss of performance: this may indicate that professional maintenance is necessary.

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing What should we pay attention to in winter to properly maintain our outdoor heat pump?

Winter puts the outdoor heat pump to a tough test, so here are the key elements to monitor to ensure its proper functioning: ❄️ 1. Keep the outer unit clear Make sure the heat pump is not blocked by snow, ice, leaves or debris. Dry regularly around the unit and maintain a free space of at least 30 to 60 cm to allow good air circulation. 🧊 2. Check ice accumulation It is normal for a little frost to form, but if a thick layer of ice persists, it may interfere with functioning. In this case, never use hot water or sharp tools: call a technician. 🔄 3. Observe de-icing cycles The heat pump passes periodically in deicing mode. If you see steam or hear a noise change, it's normal. But if the apparatus remains frozen or seems to be no longer heated, a check is required. 🔌 4. Check defrosted water flows Make sure the water from defrosting discharges properly, without returning to the unit where it could freeze and block the fan blades. 👍 5. Schedule an annual inspection Even if everything seems to work, a certified technician can detect the beginnings of a problem or adjust the parameters for winter.

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing How often should I have my heat pump maintained by a professional?

It is recommended that you have your heat pump inspected and maintained by a certified professional either once a year or every two years, ideally in spring or autumn, before the high-use seasons. This maintenance includes: - Refrigerant gas verification - Snake cleaning - Test of electrical components - Checking air flow and general operation - Detection of any wear and tear or preventive abnormality 👉 Regular maintenance extends the life of your heat pump, prevents unexpected breaks and maintains optimal performance — for your comfort and wallet.

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing What is HVAC?

The HVAC (Heating, Ventilation, Air Conditioning) is the set of systems that control the temperature and air quality of your home or office. It ensures your comfort all year round, by heating, cooling, filtering air and controlling moisture.

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing How does a heat pump work?

A heat pump is a two-in-one device! In winter, it captures heat from the outside to take it home. In summer, it does the opposite: it removes heat from the inside to refresh you. It is popular because it is very energy efficient, it reduces your electricity bills and it does both heating and air conditioning.

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing Are heat pumps effective during the harsh winters of Quebec?

o Absolutely! Modern heat pumps, including the "cold climate" models we install, are designed to be very efficient even at very low temperatures (up to -25°C and below). They are often combined with an additional system for the coldest days, guaranteeing you optimal comfort at all times.

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing Which air conditioning system do I choose for my home? Wall or central?

o The choice depends on several factors! A wall air conditioning is ideal for cooling one or two main rooms and is easier to install. A central air conditioning climates the entire house via a network of ducts and offers uniform comfort. Our experts will assess your space and your needs to recommend the best option. Contact us today!

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing What are the most economical heating options for Quebec?

Heat pumps are often the most economical solution in the long term because they are very efficient. Other options such as modern electric furnaces or natural gas (depending on your region) can also be very effective. We help you find the solution that optimizes your savings and comfort.

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing What government subsidies are available to purchase a heat pump or a new system?

Heat Pump Grants – Quebec 2025 1. LogisVert, Hydro-Québec 👉 Offer up to 6,700 $ for the installation of an efficient heat pump, according to its low temperature performance. 2. Federal Program – Affordable Oil Conversion 👉 Up to 10 000 $ for low- and middle-income households replacing their heating with a heat pump. 3. Bi-energy programme (Energy and partners) 👉 Up to 7,300 $ 9 100 $ to switch from a natural gas system to a two-energy heat pump system. 6. Novoclimate Program (Government of Quebec) 👉 For new buildings with high energy performance, with double aid for first buyers. 7. Economic Programme (Ministry of Energy) 👉 For low-income households: personalized advice and small free work to improve thermal comfort. 8. Federal Tax Credit – Greener Houses 👉 Up to 5 000 $ for energy efficient renovations including heat pumps, plus 600 $ for energy assessment. 9. Municipal aids (by city) 👉 Some municipalities offer between 200 $ and 1,000 $ for installation of energy efficient systems. 💡 Tip: Many of these programs can be combined, which significantly reduces the total cost of your project.

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing Heat Pump Grants – Quebec 2025 1. LogisVert, Hydro-Québec 👉 Offer up to 6,700 $ for the installation of an efficient heat pump, according to its low temperature performance. 2. Federal Program – Affordable Oil Conversion 👉 Up to 10 000 $ for low- and middle-income households replacing their heating with a heat pump. 3. Bi-energy programme (Energy and partners) 👉 Up to 7,300 $ 9 100 $ to switch from a natural gas system to a two-energy heat pump system. 6. Novoclimate Program (Government of Quebec) 👉 For new buildings with high energy performance, with double aid for first buyers. 7. Economic Programme (Ministry of Energy) 👉 For low-income households: personalized advice and small free work to improve thermal comfort. 8. Federal Tax Credit – Greener Houses 👉 Up to 5 000 $ for energy efficient renovations including heat pumps, plus 600 $ for energy assessment. 9. Municipal aids (by city) 👉 Some municipalities offer between 200 $ and 1,000 $ for installation of energy efficient systems. 💡 Tip: Many of these programs can be combined, which significantly reduces the total cost of your project.

How long does it take to install a heat pump or air conditioner?

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing The duration varies depending on the type of system and the complexity of the installation. A wall heat pump can be installed in one day, while a central system can take one to two days. We always plan the work to minimize inconvenience and ensure a quick and impeccable installation.

What are the most common error codes?

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing Here is a list of generic codes and common situations: Code: E1, E3, E5, E6, E7, E9 (or similar symbols depending on the brand). Common meaning: Communication problem between indoor and outdoor units (common on multizones), temperature sensor problem or fan motor problem.

What if I have the following code: E1, E3, E5, E6, E7, E9 (or similar symbols depending on the brand)?

icon add white Request your free quote and find out what financial assistance YOU might already be eligible for without knowing 1. Reset the device (see section 1). This is often the solution for communication codes. 2. Check that the filters of all the inner units are clean (see maintenance guide). A very cracked filter can affect temperature sensors and air circulation. 3. Check that there is no obstruction of outer units (sheets, snow, debris). 4. Make sure the air records of indoor units are not blocked by furniture. • If it persists: This type of code often requires the intervention of a technician. There could be a disconnected wire, a faulty sensor, or a more complex problem with the electronic card.

Why do we have an E7 error code?

A heat pump that supplies multiple heads can only operate in one mode at a time. For example, if one head is in heating mode and another in air conditioning mode, the error code E7 will appear. To make it disappear, you need to put one mode, either the heating mode or the air conditioning mode.

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