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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.
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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.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
18.9K comments
Most recent: Stiebel Eltron heat pump water heater by WilliamGwiazdowski
March 4
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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.
170 discussions
1.4K comments
Most recent: Cost to install Aprilaire 865 whole house steam humidifier with fanpack by pecmsg
February 21
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Expand for more options.
3.8K discussions
39.5K comments
Most recent: Furnace fires up for a while then quits by mattmia2
March 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?
78 discussions
861 comments
Most recent: Steam pipe leak under pressure in the big storm ha ha by ethicalpaul
January 27
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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.
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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.
15.9K discussions
181.9K comments
Most recent: Radiator valve issues... not the one that is always asked about. by NewJerseyKirk
1:41PM
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Expand for more options.Got questions that are specific to thermostats and controls? Ask them here.
3.5K discussions
18.4K comments
Most recent: Low limit aquastat not calling for heat by ericthor
March 4
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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!
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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.
51 discussions
305 comments
Most recent: Job Opportunity in NYC: Maintenance Engineer at Morgan Library & Museum by Mad Dog_2
February 25