r/hvacadvice is a subreddit with 266k members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses looking for, heat pump, hvac, replacement, and mini split, 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.
Please read rules before posting!
Popular Themes in r/hvacadvice
#1
Advice Requests
: "Hvac maintenance from 90$ to 9k in a matter of days...help"
26 posts
#2
Solution Requests
: "What is the best window air conditioner for a room with afternoon sun?"
10 posts
#3
Pain & Anger
: "HVAC leaking 1 week after closing"
2 posts
#4
Money Talk
: "Carrier 3 and 4 ton 16 SEER2 system 80% AFUE for $21,700. Is this reasonable?"
2 posts
#5
Self-Promotion
: "Where can I sell a LG 22,000 BTU White DUAL Inverter Smart Wi-Fi Enabled Window Air Conditioner?"
1 post
Popular Topics in r/hvacadvice
#1
Looking For
18 posts
#2
Heat Pump
: "Quebec homeowner looking for advice on the right Heat Pump configuration for a 1974 bungalow; very different quotes so far"
5 posts
#3
Hvac
5 posts
#4
Replacement
4 posts
#5
Mini Split
: "Getting a Mini Split for my garage. No idea what's good"
4 posts
#6
Furnace
: "Just checked my Furnace and found this weird liquid/leak — what is it?"
4 posts
#7
Thermostat
3 posts
#8
Ac
3 posts
#9
Ac Struggling
3 posts
#10
Noise
: "Help with Noise."
3 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
: "Which HVAC systems are these restrictive filters for?"
30 posts
#2
General
: "Gotta love HVAC marketing gimmicks"
15 posts
#3
No cooling
: "Goodman AC not keeping up in afternoon — weak cooling from both zones"
10 posts
#4
Quotes
: "Condensor & Air Handler Install - CT"
5 posts
#5
Heat Pump
: "Furnace not draining when connected to the drain"
4 posts
#6
Boiler
: "Baseboard covers - best option?"
3 posts
#7
Furnace
: "cat jumping through furnace"
3 posts
#8
Filters
: "Commercial Vacuum Recommendations"
2 posts
#9
Electrical
: "Ctrac3/ EngAir MUA"
2 posts
#10
Thermostat
: "Thermostat replacement killed the fan coil blower?"
2 posts
Member Growth in r/hvacadvice
Yearly
+82k members(44.5%)
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About
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Last updated: August 12, 2026