r/hvacadvice is a subreddit with 243k members. The most common kinds of discussions are advice requests and pain & anger, and the community frequently discusses hvac, ac, unit, noise, and help, and they frequently recommend/review smart thermostat, thermostat, and hvac.
A place for homeowners, renters, tenants, business owners or anyone with a general question about their HVAC system.
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Popular Themes in r/hvacadvice
#1
Advice Requests
: "HVAC filter uncommon size"
11 posts
#2
Pain & Anger
: "Landlord said a professional said all the hvac system needed was a “turn everything off” reset. How screwed am I?"
8 posts
#3
Solution Requests
: "Portable AC and fan set up help needed to cool my flat"
4 posts
#4
Money Talk
: "Anyone else seeing what distributors are dumping lately?"
2 posts
Popular Topics in r/hvacadvice
#1
Hvac
: "Is Hvac brand loyalty actually justified?"
147 posts
#2
Ac
: "Would you buy a house with this inside the HVAc?"
138 posts
#3
Unit
: "New home, new Unit, poor performance."
94 posts
#4
Noise
: "What’s the cause of this Noise"
52 posts
#5
Help
: "Will this be too hot?"
44 posts
#6
Struggling
43 posts
#7
Furnace
: "Got a new Furnace and AC; is it normal to feel air coming out from the air handler and Furnace?"
29 posts
#8
System
: "New System or further repair?"
29 posts
#9
Question
: "Adding a vent in the garage"
29 posts
#10
Thermostat
: "How do I wire my Thermostat?"
28 posts
Products Discussed in r/hvacadvice
Smart Thermostat
79 reviews
#1
Ecobee
4.4★ from 34 reviews
#2
Honeywell
3.8★ from 20 reviews
#3
Nest
3.4★ from 10 reviews
Thermostat
46 reviews
#1
Ecobee
4.4★ from 18 reviews
#2
Honeywell
4.2★ from 17 reviews
#3
Thermostat
1.0★ from 1 review
Hvac
15 reviews
#1
Ecobee
3.7★ from 3 reviews
#2
Trane
3.7★ from 3 reviews
#3
Honeywell
3.0★ from 2 reviews
Flair Used in r/hvacadvice
#1
AC
: "Landlord said a professional said all the hvac system needed was a “turn everything off” reset. How screwed am I?"
34 posts
#2
General
: "Is this possible for DIY"
11 posts
#3
Heat Pump
: "is this fence an issue to the hvac system?"
6 posts
#4
Electrical
: "Bad Compressor or Electrical surge"
4 posts
#5
Furnace
: "Got a whole home humidifier installed, wiring looks suspect."
4 posts
#6
Thermostat
: "can someone explain to me how this works"
4 posts
#7
Quotes
: "Is this quote reasonable?"
2 posts
#8
No cooling
: "Help with troubleshooting"
1 post
#9
Filters
: "Where’s my air filter?"
1 post
Member Growth in r/hvacadvice
Yearly
+75k members(44.6%)
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About
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Last updated: June 24, 2026