r/hvacadvice is a subreddit with 252k 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, heat pump, and thermostat.
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
19 posts
#2
Hvac
5 posts
#3
Thermostat
4 posts
#4
Replacement
4 posts
#5
Heat Pump
3 posts
#6
Hvac System
3 posts
#7
Mini Split
2 posts
#8
Furnace
2 posts
#9
Looking For A Replacement Capacitor
1 post
#10
Looking For A Temp Gauge
1 post
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
: "What could be the problem my ac is not blowing so well"
19 posts
#2
General
: "Curbless 1000cfm kitchen exhaust"
12 posts
#3
No cooling
: "Can you spot the issue?"
3 posts
#4
Heat Pump
: "Understanding proper airflow across A frame coil"
2 posts
#5
Thermostat
: "Help trying to install smart thermostat for my fiancee. More complicated than mine."
2 posts
#6
Quotes
: "Cost of a 2.5 ton AC unit with whole system replacement ? I’m in Chicago area"
2 posts
#7
Furnace
: "Weird hvac exhaust fan/blower cycle constantly."
2 posts
#8
Electrical
: "AC Mini Split for Garage, Panel Upgrade Needed?"
2 posts
Member Growth in r/hvacadvice
Yearly
+76k members(43.6%)
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Last updated: July 11, 2026