HVAC guides & resources
Practical, sourced guidance for homeowners and property managers. Every guide lists its sources and the date it was last reviewed.
- MaintenanceHVAC Maintenance Checklist for HomeownersWhat to do yourself each month and season, and what a professional tune-up should include.Updated Oct 14, 2026 · 6 min read
- Buying guideHeat Pump vs. Furnace: How to DecideHow heat pumps and furnaces work, where each makes sense, and what to ask a contractor.Updated Oct 14, 2026 · 7 min read
- Buying guideHow to Choose an HVAC ContractorA practical checklist for comparing contractors, estimates and warranties.Updated Oct 14, 2026 · 5 min read
- CareersEPA Section 608 Certification ExplainedWho needs EPA 608 certification, the four certification types, and how technicians get certified.Updated Oct 14, 2026 · 4 min read
- RegulationsHVAC Contractor Licensing: What Varies by StateWhy licensing rules differ, what to check, and how to verify a contractor before hiring.Updated Oct 14, 2026 · 4 min read
- Air qualityIndoor Air Quality Basics for Your HVAC SystemFilters, ventilation and humidity — what actually helps and what to ask a contractor.Updated Oct 14, 2026 · 5 min read
- Buying guideSmart Thermostats: Are They Worth It?What smart thermostats do, compatibility questions, and when to get professional installation.Updated Oct 14, 2026 · 4 min read
- IncentivesFinding HVAC Rebates and IncentivesWhere to look for current utility, state and federal incentives — and why to check before you buy.Updated Oct 14, 2026 · 4 min read