HVAC Contractor

GSW Hot Water Heaters

GSW hot water heaters are built to be energy efficient, safe, and always reliable, which is why they have become the most popular in Canada. Across the country, GSW hot water heaters have a great reputation for their excellent value which is how they’ve gained their tremendous loyalty and trust from their Canadian users. They design their product with the intention of creating the safest and most dependable energy efficient water heaters. So if you’re looking to change your home’s Read More...

Furnace noise you should be aware of

Unusual furnace noise is something many people pass on as not being a big deal, but really it could indicate that there’s a much bigger underlying problem. Your furnace usually produces a moderately quiet humming or buzzing noise, this is totally okay, it just means that your furnace is on and is working. Any other furnace noise besides this humming sound is what could indicate that there’s a problem with your home’s furnace unit. But how do you know if Read More...

How to Shut Down Central AC for the Winter Season

A frequently asked question we receive when customers are preparing for the cold weather ahead is how to properly shut down their central AC system for the winter season? By following the steps below we can assure you that your central AC will be shut down currently and you will be ready for the season approaching: First you should turn off the cooling system. This is done by simply using your thermostat’s settings to turn the cooling setting from on Read More...

Your Home Heating and Fire Safety Tips

Knowing the do’s and don’ts of your home heating system is more important than you may think. The leading cause of fires in the home is the improper use of heating equipment. These fires often happen during the winter season as this is when you’ll be using your home heating system most frequently. This winter season, DeMark Home Ontario not only wants to keep you warm, but also safe from fire hazards in your home. The following is a list Read More...

Signs of Cracked Furnace Heat Exchanger

Although a furnace has many parts and seems like a complicated piece of equipment, there are only really three primary components: the blower, the burner, and the furnace heat exchanger. The furnace heat exchanger works in harmony with the burner to produce heat which is blown throughout your home. The heat exchanger also has another important job which is filtering out any toxic byproducts of combustion out of the heating system through your system’s flue. When a problem develops in Read More...

New High-Efficiency Furnace Save Money?

Many people wonder if installing a brand new high-efficiency furnace in their home is really going to save them money, and the answer in most cases is yes, it will. If your current furnace is an old model or mid-efficiency model, then upgrading to a brand new high-efficiency furnace will save you some extra bucks on your utility bill. As the years go on, a furnace may become less efficient which is why an upgrade from your old furnace may Read More...

My Furnace Overheating

Living in Canada, we experience cold and frigid winters every year, so, your furnace has to work extra hard to heat your home and with this comes the chance of your furnace overheating. Most furnaces have a built-in safety feature which will turn off the furnace when the unit reaches a high temperature. Although these safety precautions are there, an overheated furnace being in your home is still not ideal for your family or your home. You may be wondering, Read More...

Why My Air Conditioner Smell Bad?

When you turn on your air conditioner, you expect to be greeted by nice, cool air. However, if the air coming from your AC vent is smelly, you might have a serious problem. Some air conditioner smell are merely irritating while others are hazardous. This unpleasant air conditioner smell is actually called “dirty sock syndrome” and can be caused by several factors: dirty coils, improperly sized unit, clogged drain, and problem with air filtration system. Most of the time, the Read More...

Air Conditioner Making Noise

A frequent problem which homeowners experience is their air conditioner making noise, but this problem often has a simple solution. The high pitched sounds which people often hear coming from their AC unit happens when there is an insufficient amount of air flowing through the return vents, which may be happening due to a variety of issues. A dirty filter is often seen as the main culprit behind an air conditioner making noise. There may be a blockage in the return Read More...

Duct Cleaning – Before or after new furnace Air Conditioner installed?

If you decided to replace your old HVAC system with the new furnace Air Conditioner then it is also time to think about a duct cleaning. Duct cleaning generally refers to the cleaning of various heating and cooling system components of forced air systems, including the supply and return air ducts and registers, grilles and diffusers, heat exchangers heating and cooling coils, condensate drain pans, fan motor and fan housing, and the air handling unit housing. Duct cleaning is a Read More...
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Upgrading to a high-efficiency heating and cooling system offers more than energy savings.

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This item comes with absolutely free standard installation. We’ll ensure that the product is completely installed to code and fully functioning prior to leaving.

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Great news! Receive a brand new digital thermostat absolutely free when renting this HVAC product from DeMark Home Ontario.

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Great news! When renting a furnace or air conditioner, you’ll get your first 2 months absolutely rent free.

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Great news! When renting a furnace and air conditioner together, you’ll get your first 3 months absolutely rent free.

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This product carries a manufacturer warranty and we’re happy to explain it in full to you. Feel free to get in touch with us for more information or see the Warranty Information tab for more information

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If your order is placed and confirmed by 11am, we can have your HVAC product installed within the same day.

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Great news! When renting a qualifying water heater, you’ll get your first 2 months absolutely rent free.

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This water heater is subject to reduced rental rates based on the DHO discount program. Save money on your bill every single month!

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Save money on this item when buying it along with a qualifying high-efficiency furnace or air conditioner.

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Promotional code can be found on the eFlyer, Brochure or promotional email that you received from us.

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Notice for Power Vent Water Heater Customers

Effective August 2007, gas code requires technicians working on venting to replace black ABS vent pipe with white UL-certified vent pipe.

We will upgrade your venting pipes at no additional cost.

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