r/askHVAC
4k members
r/askHVAC is a subreddit with 4k members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses ac, hvac, unit, thermostat, and cooling.
Popular Themes in r/askHVAC
#1
Advice Requests
: "Roommates are running AC with open windows and suffocating the indoor unit with blankets. Need tech advice on the damage."
17 posts
#2
Solution Requests
: "Help me figure out what ton air handler I need"
9 posts
#3
Pain & Anger
: "Hired 3 companies and AC still not working"
3 posts
#4
Money Talk
: "Heated Driveway Worth This Price?"
1 post
Popular Topics in r/askHVAC
#1
Ac
: "The apartment service man was scared. Sparking furnAce when Ac is turned on"
99 posts
#2
Hvac
: "Question for Hvac business owners - what actually happens to a maintenance agreement after the customer signs up?"
83 posts
#3
Unit
: "Age of this Unit?"
28 posts
#4
Thermostat
: "Old lennox heat pump Thermostat"
23 posts
#5
Cooling
: "Cooling a garage"
17 posts
#6
Furnace
: "Furnace won’t light after power outage."
16 posts
#7
Compressor
: "Brand New Install - Compressor Fan Issues"
13 posts
#8
Noise
: "Apartment closet ac unit hissing sound"
13 posts
#9
Condenser
: "Capacitor for Ruud AC Condenser"
11 posts
#10
Filter
: "Trying to find the Filter location for an ancient Singer HVAC system (Model: ACV52019-2B) 1970-1980"
10 posts
Member Growth in r/askHVAC
Yearly
+3k members(411.3%)
Similar Subreddits to r/askHVAC
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44.8% / yr
About
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This page gives a focused view of r/askHVAC, including current member size, discussion patterns, product reviews, and related communities to explore.
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Last updated: June 16, 2026