What The Heat Handbook is
The Heat Handbook is an independent guide to residential heating and hot water systems: furnaces, water heaters, and heat pumps. When something stops working, most homeowners want two things before they pick up the phone — to understand what is actually wrong, and to know whether it is a five-minute fix or a real repair. That is exactly what we publish: clear, step-by-step troubleshooting, honest cost breakdowns, and maintenance walkthroughs written the way a good technician would explain them.
How we research our guides
We are a research-driven publication, not a repair company. Every guide is built by cross-checking manufacturer service documentation, industry safety standards, and current pricing from multiple contractor sources. When we give a cost range, it reflects real 2026 US pricing — parts, labor, and the code items that often get left out of a quick estimate. When we describe a repair, we follow the procedure the manufacturer actually documents, not shortcuts.
Safety comes first
Heating and hot water systems involve gas, high voltage, and pressurized water. Every guide clearly separates the steps a homeowner can safely do from the work that requires a licensed professional. We will never recommend a procedure that manufacturer documentation advises against, and anything involving gas connections or combustion is always flagged for a pro. If a guide tells you to stop and call someone, that advice is there for a reason.
How we stay independent
The Heat Handbook is reader-supported. Some pages contain advertising, and some link to products through affiliate programs including Amazon — if you buy through those links, we may earn a small commission at no extra cost to you. This never changes what we recommend or the price you pay. We link to the parts and tools we would actually use, and our guidance is written before any product is chosen. You can read more on our Affiliate Disclosure and Editorial Policy pages.
Get in touch
Found an error, have a question, or want to suggest a guide? We read everything — reach us on our Contact page.