Heat / Discussions

Is there an update on your demo house solar air heater?

...heated collector to provide supplemental heat for the in floor heating system Legalett is known for. My question is does the extra cost of adding the solar air ...

Posted by dean c Oct. 24, 2020, 2 p.m. Concept and design 1 Responses

Should I install two small electric hot water heaters - ones or big one?

...heaters will be electric, perhaps heat pump style. Should I consider two hot water heaters, one at each end of the house or go with a larger hot water heater an...

Posted by Shaun B June 28, 2019, 2:14 p.m. Hot water 2 Responses

What considerations should be made when installing a green roof on a metal building?

...heat and weather we experience here in pine country has us questioning what plants are light enough, and are able to withstand the heat without an extensive roo...

Posted by Nina Flores Feb. 16, 2020, 4:57 p.m. Roof coverings 3 Responses

What is the best way to make a row house in Montreal Quebec more energy efficient?

...heaters? Is it ever worth it to break up the concrete basement floor to put in underfloor heating and insulate? Looking for heat efficiency and cost efficienc...

Posted by Elizabeth Brown Feb. 26, 2019, 9:09 p.m. Wall assemblies - renovation 3 Responses

Why do my radiators make a crackling sound?

...heaters often make cracking noises, for example when they are turned on after a long shutdown, or simply when they start heating again when the air temperature ...

Posted by Heather Baird Dec. 11, 2017, 1:48 p.m. Heating with electricity 2 Responses

Should I replace my geothermal system with a gas boiler?

...heat in the basement and forced air heat on the main floor. I met with the plumber and the heating guys 2 days ago and have been trying to sort out what the b...

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

What causes moisture on a ceiling in winter?

...heat pumps which are at least 15 or more years old? Condensation forms when humid air meets a cold surface, so if there is condensation on a ceiling then ther...

Posted by Cheri Banet Jan. 23, 2020, 10:22 p.m. Wall assemblies - renovation 1 Responses

How do you choose between a basement or slab on grade?

...heat/cool retention from the earth, as well as protection from elements. But, after reading some of your wonderful articles, I am wondering if the slab on gra...

Posted by A. Delmas May 21, 2020, 8:59 p.m. Foundation choices 1 Responses

What is the best exterior Wall and Roof Rigid Insulation for a barn renovation?

...Heat ( haven't decided yet on heating source) Slab will have 4" of Rigid Insulation under the slab and extending 4' out from the edges. I believe I am located i...

Posted by Ron Busch June 27, 2020, 3:50 p.m. Wall assemblies - renovation 1 Responses

Do I need to insulate under the footings of a frost protected shallow foundation?

...heat transferring through the footing to stabilize the ground temp. My next thought was to use the FPSF design guidance for an unheated building, however this i...

Posted by Jon Piana April 15, 2019, 8:45 a.m. Slab on Grade 1 Responses

Why do you say building on a slab is more ecological than starting with a basement?

...heat, and a bigger ecological footprint. Please explain, thanks. Your question raises pertinent points. Basements are certainly useful, but from an environmen...

Posted by Geri P Dec. 11, 2017, 11:45 a.m. Foundations and Basements 1 Responses

Can you install a slab on grade foundation in the Fall and leave it over winter?

...heated concrete (meaning use hot water in the mix), and we did an air heated radiant floor by Legalett , so we were also able to heat it immediately, that’s not...

Posted by Matthew Gioia Sept. 21, 2020, 9:15 p.m. Slab on Grade 1 Responses

Can you add exterior rigid foam insulation (e.g. EPS) with replacing windows?

...heat pumps and realize that an efficient building envelop is important for these work well.

Posted by Peter Milliken Nov. 9, 2020, 9:13 a.m. Wall assemblies - renovation 0 Responses

What is the right amount of insulation for a house?

...heated Edelweiss Demonstration house that covers the basic principles of passive heating and cooling concept and design. Hi, thanks for the response. I've spoke...

Posted by Ryan Gerbrandt Feb. 11, 2019, 9:57 a.m. Passive solar home design 4 Responses

Is polyiso board or styrofoam best for insulating when finishing a basement in CO?

...heat and doesn't get mold problems in the future? We're thinking of doing this job ourselves, do you think it's possible for reasonably competent DIY'ers to com...

Posted by Evan B. Nov. 21, 2019, 8 p.m. Basements improvements 1 Responses

Is it possible to connect greenhouse with the building?

...heat in summer, more in winter) and some space to grow plants like tomatoes or herbs. I have read your articles about greenhouses and solariums, so its starting...

Posted by Julia Jedrys March 31, 2020, 6:47 p.m. Greenhouses and Sunrooms / Solariums 1 Responses

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

...heat pump water heater? Increased efficiency with an air source heat pump and heat pump water heater working in tandem A heat pump water heater will act to ...

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

What are the factors I should consider for choosing between a slab on grade and basement?

...heat/cool with an ERV and mini split system, not radiant in floor. I have several questions about the merits of each option, and would appreciate advice. 1. C...

Posted by Shaun B April 2, 2019, 6:35 a.m. Slab on Grade 3 Responses