Our main business is geothermal heat pumps, also referred to as ground source heat pumps, as they extract heat from the ground. Another type of heat pump, air source heat pumps, extract heat from the outside air. The advantage of these air source heat pumps is they are usually cheaper to install than geothermal heat pumps. They work very well in certain temperature ranges, then as outside air temperatures get colder, capacity and efficiency start to drop.
Traditionally air source heat pumps required duct work to distribute air throughout the house. In recent years, new technology has allowed use of these air source heat pumps with an indoor wall mounted unit to move air, which eliminates the need for ductwork. We use the term “mini-split”, or “ductless split” for these units. Without having ductwork to distribute air, we have more of a localized heating and cooling effect. For example, if you have an indoor unit mounted on the wall in the living room, the bedroom down the hall is not going to get the same effect as the living room, since we are not circulating air to that room. However, in houses with electric heat and a few thermostats, the electric heat can still keep zones warm if needed, while the heat pump can primarily serve the room it is in. In houses with one central thermostat, the system will run to heat the room to a preset temperature and as the weather outside gets too cold for the unit to operate efficiently, the main heating system is utilized just like before the heat pump was installed. Usually, when the outdoor temperature drops to -15 or -20 degrees Celsius, the heat pump will no longer offer significant heat output, and the main heating system will be required to keep the house comfortable. This is not to say the unit won’t produce heat at temperatures lower than that, but the output energy gets close to the input energy. The systems come in different capacities and are sized for the area we want to heat. The outdoor unit is the actual heat pump and houses the compressor, fan and heat exchanger. Noise is remarkably low from both the outdoor and indoor unit. The only maintenance is periodic changing of a small filter in the indoor unit and to ensure the outdoor unit has the snow kept clear around it. We often mount the heat pump on a stand to help with the snow issue.
The indoor unit has a coil for heat exchange as well as a fan. One of the technological advancements with these units is their ability to vary output based on demand. That means in milder weather they can scale back the output, which increases efficiency and gives better run time preventing short cycling, which means the unit turns on and off too frequently.
We are proud to sell the Daikin brand. These units have a 12 year warranty on parts, and 6years on labour. Daikin units are built in Japan and are the largest manufacturer of HVAC equipment in the world and have been manufacturing equipment for 80 years. Complete with built-in self diagnostics, we feel this is the only brand for us to confidently offer our customers.
Please give us a call for pricing and the best option for your home. We offer financing options through Nova Scotia Power’s financing program with attractive interest rates and 3, 4, 5, 6, 7, or 10 year terms. Payments are simply added to your power bill.
For more brand information follow this link: DAIKIN AC.