r/hvacadvice is a subreddit with 259k members. The community frequently discusses looking for, hvac, thermostat, replacement, and heat pump, and they frequently recommend/review smart thermostat, thermostat, and hvac, and the most common flair used is ac, general, no cooling, thermostat, and furnace.
A place for homeowners, renters, tenants, business owners or anyone with a general question about their HVAC system.
Please read rules before posting!
Popular Topics in r/hvacadvice
#1
Looking For
18 posts
#2
Hvac
5 posts
#3
Thermostat
4 posts
#4
Replacement
4 posts
#5
Heat Pump
3 posts
#6
Ac
3 posts
#7
Ac Struggling
3 posts
#8
Hvac System
2 posts
#9
Mini Split
2 posts
#10
Furnace
2 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 installed window AC sideways"
47 posts
#2
General
: "Should my ceiling be over 100°F with the AC on?"
11 posts
#3
No cooling
: "Fixed it! It wasn’t “too hot outside”"
5 posts
#4
Thermostat
: "Is there a smart thermostat replacement for Carrier Infinity? Ideally HomeKit compatible."
4 posts
#5
Furnace
: "Not sure what to do with the basement HVAC ducting."
3 posts
#6
Filters
: "Why did my water filter turn completely black after just a month of using it?"
2 posts
#7
Heat Pump
: "Just a quick install check"
2 posts
#8
Electrical
: "Electric line under or above HVAC duct?"
1 post
#9
Boiler
: "Navien combo boiler consistently putting out heat to wall vents - it’s 90° in my home"
1 post
#10
Quotes
: "Heat pump quote comparison and insights"
1 post
Member Growth in r/hvacadvice
Yearly
+81k members(45.3%)
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Last updated: July 24, 2026