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Heating Help: The Wall
The #1 Online Resource for HVAC Answers. Ask and answer questions about HVAC systems, both old and new.
Category List
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Expand for more options.Got a general heating question, or a comment to make? Just want to chat with friends? This is the place.
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Expand for more options.Got questions about A/C, Heat Pumps and Refrigeration? Ask and ye shall receive.
3.2K discussions
25K comments
Most recent: Minisplit minimum outdoor temp question by ChrisJ
12:28AM
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Expand for more options.Are you heating with an alternative fuel such as wood? This is the place to be.
61 discussions
743 comments
Most recent: Wood Burning Insert Recommendations by stevetars
December 2025
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Expand for more options.Every flame produces carbon monoxide. You can never be too vigilant.
429 discussions
1.8K comments
Most recent: Personal Co detectors what are you guys using? by Steve_210
December 2025
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Expand for more options.
120 discussions
1.4K comments
Most recent: repairing a neglected chimney, flue, thimble, liner, and leaks by Bob Harper
January 1
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Expand for more options.Industry expert Larry Weingarten is here to help answer your domestic hot water questions. Ask for help or share what you know here. To learn even more, purchase Larry's Water Heater Workbook and visit his website.
2.1K discussions
18.7K comments
Most recent: confused in Rhode Island . . . low sensor signal but pilot stays lit on Bradford White Defender by 109A_5
January 4
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Expand for more options.
5.8K discussions
56.2K comments
Most recent: How does this near-boiler piping look? by hot_rod
1:07AM
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Expand for more options.This exciting field is really taking off. Share your thoughts and ask questions here.
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Expand for more options.Got questions about indoor-air quality? Bill Wolfe is an expert on this topic and he's here for you.
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Expand for more options.
3.7K discussions
38.7K comments
Most recent: Small leak on the filler pipe into the oil tank by MaxMercy
January 4
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Expand for more options.Are you having problems with pipes deteriorating? We've seen this problem occur often, particularly with pinhole leaks in copper pipes. Please share your experiences here. What have you learned?
77 discussions
847 comments
Most recent: Diagnostic Tool For Circulator Pump by lindylex
December 2025
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Expand for more options.Sure, we're a heating site, but a lot of great plumbers also hang out here. Got questions or thoughts to share? Do it here.
1K discussions
12.4K comments
Most recent: Cut in a copper dwv fitting with little room by mattmia2
January 4
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Expand for more options.This is the place to ask questions (or answer them) that are specifically about radiant heating systems of all types, sizes and flavors.
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Expand for more options.Solar is getting hot! Got a question about it, or want to share what you know? This is the place.
395 discussions
3.8K comments
Most recent: I'm getting solar panels. I'll let you know how it goes in this discussion thread. by ethicalpaul
December 2025
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Expand for more options.Interested in steam heating systems, old and new? Here's a place to focus on just that.
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Expand for more options.Got questions that are specific to thermostats and controls? Ask them here.
3.4K discussions
18.1K comments
Most recent: Installed Tekmar 518 and now in floor heating runs non-stop. by thetrualbertan
December 2025
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Expand for more options.Got something you don't need and would like to sell? Get together with other Wallies here and make your own deals. (Please, no corporate advertising here.) And, as a courtesy to our community, when your item has sold, please post that it is no longer available so that we can close the discussion. Thank you!
700 discussions
1.9K comments
Most recent: Runtal white touch-up paint; no charge by Boon
December 2025
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Expand for more options.This is a gathering spot for announcements about educational opportunities in our industry. Feel free to add posts about upcoming classes. Thank you.
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Expand for more options.If you're looking for good people, feel free to post your opportunities here.
50 discussions
303 comments
Most recent: Hydronic Boiler Tech Needed in Chicago by hot_rod
December 2025