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Recommendation for HVAC systems for house with spray foam insulation
Posted on 5/16/19 at 7:17 pm
Posted on 5/16/19 at 7:17 pm
Please help
This post was edited on 5/16/19 at 7:18 pm
4
Posted on 5/16/19 at 8:05 pm to Stellytiger
One that blows cold air in the summer and warm air in the winter.
What kind of recommendations? Brand? SEER? Type? Size?
Spray foam doesn’t mean much except in sizing the unit.
What kind of recommendations? Brand? SEER? Type? Size?
Spray foam doesn’t mean much except in sizing the unit.
Posted on 5/16/19 at 8:09 pm to Stellytiger
quote:
Recommendation for HVAC systems for house with spray foam insulation
Either you need to give way more details about your house or you just need to call a mechanical company.
Posted on 5/16/19 at 8:29 pm to Stellytiger
It is recommended to have fresh air intake from outside to enter into the system. The spray foam seals the house up so tight that the air in the house will eventually have a stale smell much like the inside of an ice chest without the fresh air intake
At least that’s what my sister and brother in law told me and they are regional managers for an HVAC company. I mentioned to this to my installer and they knew exactly what I was talking about and said they had already planned to do so.
At least that’s what my sister and brother in law told me and they are regional managers for an HVAC company. I mentioned to this to my installer and they knew exactly what I was talking about and said they had already planned to do so.
Posted on 5/16/19 at 8:53 pm to gumbeaux
I have a 12X12 exterior air return for my spray foam home. I would say a 2 stage air handler that can run on both a humidity point and a tempature point is really important
Posted on 5/16/19 at 9:51 pm to gumbeaux
quote:
It is recommended to have fresh air intake from outside to enter into the system. The spray foam seals the house up so tight that the air in the house will eventually have a stale smell much like the inside of an ice chest without the fresh air intake
Don't know why someone downvoted this. If you sprayfoamed everything well and have a low air-infiltration house with good windows, you need a fresh air intake (especially with closed cell foam that hardly allows any moisture to pass through it). The difference is that you're bringing air in and conditioning it, versus sucking air in through uncontrolled leaks and having that humid, unconditioned, and unfiltered air make it's way through the living area of the house and back via the return air vent inside.
If you want to get fancy you can incorporate a whole house dehumidifier in addition to the energy recovery ventilation system.
This post was edited on 5/16/19 at 9:53 pm
Posted on 5/16/19 at 10:59 pm to SWCBonfire
quote:
f you want to get fancy you can incorporate a whole house dehumidifier in addition to the energy recovery ventilation system.
It was brought up in another thread that whole home dehumidifiers are more of a retrofit thing, where as a two stage or variable speed system will accomplish the same thing better but also more efficiently.
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