Results 1 to 4 of 4
  1. #1
    Join Date
    May 2017
    Location
    Hamilton, Ontario
    Posts
    17
    Post Likes

    Friend gutting house, advice?

    I'm an HVAC tech, 4th year 313a in Hamilton Ontario.
    I have a friend in downtown Kitchener gutting a small house, he wants me to duct it, bring in gas (remove existing oil), do furnace AC.
    I'm going to have a heat loss calc done per room (anyone recommend someone for that?)
    I just wanted to know, my friend and I are both pretty echo conscious, but we have to do what makes sense to cost.
    Instead of gas furnace and AC, I was thinking of adding an air source heat pump. My question is, is there a way in the thermostat to get it to run gas during peak hydro rates, and heat pump otherwise, also factoring in a certain outdoor temperature?

  2. #2
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    44,275
    Post Likes
    Some of the high end thermostats have special options...

    One would need to do research on them...

    IMO definitely do NOT attempt to heat without gas... heating with elec is very expensive... even though gas is not 'cool' in the green world...
    GA-HVAC-Tech

    Your comfort, Your way, Everyday!

    GA's basic rules of home heating and AC upgrades:
    *Installation is more important than the brand of equipment
    *The duct system keeps the house comfortable; the equipment only heats and cools (and dehumidifies)
    *Cheap is not good, good is not cheap; however expensive is not a guarantee of quality!
    Choose your contractor wisely!

  3. #3
    Join Date
    Mar 2017
    Location
    USA
    Posts
    224
    Post Likes
    Just install a Honeywell iaq prestige 2.0 with outdoor sensor. Do a lockout of the heat pump after 35F then run the gas furnace. Anything above 40F run the heat pump. That's a dual fuel system. But is electric cheaper in your area or natural gas? I would also look into Fujitsu slim duct heat pump systems. Not sure your temps but they work their rated capacity until -15F before they start losing capacity . What's nice above the -15F they are over their capacity rating and are more efficient . I just don't know what's your utility cost up there. Also the -15F capability you need additional add on components to get to that point. Also with the Fujitsu or any other slim duct options you would have to come up with additional heating source once the heat pump can't maintain temps. But if he does a good job with renovations and building envelope I can't see why the heat pump not hold up? How cold does it get up there?

  4. #4
    Join Date
    Mar 2017
    Location
    USA
    Posts
    224
    Post Likes
    BTW if your concerned with being green... There is a company who makes DC volt mini splits and you can install solar panels to run the heat pump/ac. Just don't know if you can get the equipment. It's made by Pioneer .

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Contracting Business
HPAC Engineering
EC&M
CONTRACTOR