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Home heating and cooling tips from an expert on HVAC systems

(Simone Noronha for The Washington Post)

Larry Shoemaker is the owner of Deluxe Plumbing & Heating in Bethlehem, Pa., a home services company established in 1984 that works on HVAC, plumbing and electrical systems. He is active in — and has served on the board of — the Plumbing-Heating-Cooling Contractors Association, and he serves as the director of education for his local chapter. Shoemaker can answer your questions about the pros and cons of mini-splits; the best energy-saving furnaces; how often you need to add Freon to a central air conditioning unit; how to light a gas water heater safely and more.

Every Thursday at 11 a.m. Eastern time, Jura Koncius helps you in your quest to achieve domestic bliss. She and weekly guests — whether it’s Martha Stewart, Marie Kondo, Jasmine Roth of HGTV, Paula Sutton of Hill House Vintage or TikTok’s Folding Lady, Sophie Liard — answer your decorating, decluttering, design, entertaining and home-keeping questions. For more than 20 years, our Q&A has hosted conversations about how to make your home comfortable, stylish, organized and fun.

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