Heating and cooling, explained
Plain-language advice for homeowners and businesses, from the people who install and repair these systems every day.

Getting your furnace ready for winter, and staying safe from carbon monoxide
A fall checklist, plus what every home with gas appliances needs to know about carbon monoxide.
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Rooftop unit repair or replacement? A guide for building owners
How to weigh repair against replacement, and plan the crane day around your business.
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Do heat pumps work in an eastern Washington winter?
How modern heat pumps handle cold snaps, and when dual fuel makes sense.
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The refrigerant change: what R-454B means for your repair or replacement
What the switch from R-410A to R-454B means for homes and businesses.
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What a good commercial HVAC maintenance agreement covers
What scheduled maintenance should include, how often, and why it pays off.
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Planning a tenant build-out? Bring HVAC in early
Why HVAC belongs at the start of a build-out, and what to settle before walls go up.
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Choosing a new air conditioner in 2026
Sizing, efficiency, the refrigerant change and whether a heat pump makes more sense.
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What SEER2 means, and why it matters
How cooling and heating efficiency ratings work, and how to compare systems.
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Cleaner air at home, even in smoke season
Filters, maintenance, duct sealing and habits that make the biggest difference.
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Keeping cool for less in a Tri-Cities summer
Easy habits that cut cooling costs and keep your A/C running well.
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What happens at a Dayco tune-up
The inspection, cleaning and testing that go into a maintenance visit.
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No heat? No cooling? Call now.
Whether it’s 2 PM or 2 AM, a Dayco technician is on call.
