AC / Discussions

Can you dual-wire a house, part AC and part DC?

...ackup systems. As we plan to build a house to Passive House standards, is there any way to get around building it exclusively with AC power systems? I would lik...

Posted by Lee Watt March 17, 2019, 12:17 p.m. Solar photovoltaic 1 Responses

is it possible to integrate an HRV system into an existing gas forced air HVAC system?

...AC

Posted by richard gunderson Feb. 27, 2020, 2:35 p.m. Mechanical systems 0 Responses

How do you deal with a house under negative pressure?

...AC contractor come and look, and likely balance the system. Either way, when you supply air to a room with a closed door, you need to have a way (return vent or...

Posted by Connie Taylor April 16, 2020, 1:41 p.m. Ventilation 1 Responses

I have chronic illness from the air quality of my home, can you help determine if I need to replace the HVAC system?

...actual updates. HVAC right now is not efficient, full of dirt (despite having cleaned) and new furnace/AC with extra filtration and UV light. Without knocking d...

Posted by Niki Harrison Sept. 6, 2019, 4:32 p.m. HRV and ERV 2 Responses

In Ottawa, are geothermal heat pumps efficient?

Is the cost of drilling for Geothermal systems not feasible? Great question, and the answer is yes, geothermal systems are efficient in cold climates, but as f...

Posted by John Ioannou July 20, 2020, 12:19 p.m. Heat pumps, geothermal and AC 1 Responses

Where should I put a vapour retarder?

...actice, just looking to guage a nod one way or the other. Or to gauge, as the case may be. Without AC an interior vapour barrier isn't really a problem, and fra...

Posted by Jeffrey Connell March 14, 2020, 4:25 p.m. Wall assemblies - new construction 4 Responses

Can I see details about the heating and domestic hot water systems of the Edelweiss house?

...acts to cool the air in the house, so much so that most summers the air-source heat pump is actually never operated for cooling. A greater explanation can be ...

Posted by August Wehrmann March 10, 2019, 9:26 a.m. Heat pumps, geothermal and AC 1 Responses

Why is there Mould on particle board outside vapor barrier on new addition?

...ack the insulation, cut through the vapor barrier and found mould on the exterior particple board. The are no leaks in the roof, or water running down the exter...

Posted by Christine ML June 7, 2020, 1:35 p.m. Wall assemblies - renovation 1 Responses

Can you build a water-to-Air Heat Pump with a large storage tank and well water?

Instead of installing vertical or horizontal loops for a ground source heat pump could you pull water (I'm on a well) into a large tank and use a water-to-air ...

Posted by Doug Edmondson Feb. 29, 2020, 3:32 p.m. Heat pumps, geothermal and AC 0 Responses

How can I get rid of moisture between the vapor barrier and the insulation in a basement?

...actually pretty easy but not one you probably want to hear, and I know I risk getting lots of different opinions and comments - but in our opinion you should pr...

Posted by David Mitchell Aug. 14, 2018, 6:32 p.m. Basements improvements 8 Responses

What does it take to get a water heater air-conditioner and heater mini-split?

...act to cool a house, but unless your home is fairly compact, extremely well-insulated and airtight, it likely wouldn’t cool your home anywhere near enough to be...

Posted by Réal Paquin May 28, 2020, 12:44 p.m. Heat pumps, geothermal and AC 1 Responses

Do I need ceiling fans if I have an HRV?

I have high ceilings and I will be adding an addition this summer with normal height ceilings and a new stairwell to the basement. Should I arrange for a ceili...

Posted by S McIntyre April 2, 2019, 10:01 p.m. Ventilation 1 Responses

Air source heat pumps: Which brand has the best performance?

...acks occupants to provide additional heating and cooling comfort by directing itself towards you when you are in the room. Our most recent build is a LEED Pla...

Posted by Mike Brigham Jan. 22, 2020, 9:25 a.m. Heat pumps, geothermal and AC 1 Responses

What is the best heating and cooling system for a slab on grade home?

...ace for you may actually be to check out our Leed Platinum Edelweiss Demonstration house that we built in 2015, it is a super-insulated slab floor with radiant ...

Posted by Matthew Gioia July 7, 2020, 11:03 p.m. Heating and cooling 3 Responses

If a passive house is designed well is it worth the extra cost for Low E window coatings?

...ack in during the winter and help reflect heat back out in the summer. So it will save on heating and cooling costs, and if you don’t use air conditioning, when...

Posted by Joe Van Kuren June 7, 2019, 8:37 p.m. Passive solar home design 1 Responses

How do you add an Air Exchanger to a house with Hot Water Heat?

...acturer ERV wall insert ventilation systems that only require running a low voltage wire to each unit. They work in tandem, where one unit blows out at the same...

Posted by Bob Engelhart June 17, 2020, 10:08 a.m. Ventilation 3 Responses

How do you prevent walls from rotting in humid climates?

...AC and keep your house very cool then upgrading to a ‘smart’ membrane is good idea. They are more breathable than standard 6 mil poly vapour barriers. From a ...

Posted by Rose Alderson Nov. 5, 2018, 4:34 p.m. Wall assemblies - new construction 1 Responses

Should I replace my geothermal system with a gas boiler?

...ace (I have gas to the house since my wife wanted a gas stove, a gas fire place and a gas barbque), or a natural gas boiler/electric furnace option (for radiant...

Posted by Lawrence Brusnyk Oct. 31, 2018, 8:07 p.m. Heat pumps, geothermal and AC 1 Responses