All HVAC Articles & Guides
Browse our complete library of 340 expert HVAC guides, calculators, and resources
Featured Comprehensive Guides
AC Tonnage Calculator Per Square Foot (+Sizing Chart) 2026
Calculate the exact AC tonnage for your home by square footage. Includes a complete tonnage-per-square-foot chart for all home sizes (500–5,000 sq ft), climate zones, and tonnage conversion tables.
Air Conditioner BTU Calculator: What Size AC Do You Need? (2026)
Use our free BTU calculator to find the exact air conditioner size for your room or home. Covers square footage, climate zones, insulation, ceiling height, and 12+ adjustment factors for accurate AC sizing.
Furnace Size Calculator: What Size Furnace Do I Need? (2026)
Calculate the right furnace size (BTU) for your home based on square footage, climate zone, insulation, and 10+ factors. Includes BTU sizing charts for every home size and tips to avoid costly oversizing.
Heat Pump Size Calculator: What Size Heat Pump Do I Need? (2026)
Calculate the right heat pump size for your home. Covers sizing for both heating and cooling, cold-climate heat pumps, auxiliary heat requirements, and tonnage charts by square footage and climate zone.
Mini Split Sizing Calculator: What BTU Mini Split Do I Need? (2026)
Calculate the exact mini split size for any room or zone. Covers single-zone and multi-zone sizing, garage and sunroom applications, and the complete BTU sizing chart for all common room sizes.
All Types of Air Conditioners Explained (With Pros & Cons)
Every type of air conditioner compared: window, portable, mini split, central, PTAC, and more. Specs, costs, efficiency ratings, and real-world use cases for each AC type in 2026.
Browse Articles by Category
Mini Split Systems
Ductless AC systems and multi-zone guides
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Energy Efficiency
SEER, AFUE, HSPF ratings explained
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Furnaces & Heating
Gas, electric, and oil heating systems
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Window Air Conditioners
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Air Purifiers Air Quality
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AC Sizing & Selection
BTU calculators and sizing guides
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Dehumidifiers Humidity
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Portable ACs
Portable and temporary cooling solutions
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Tankless Water Heaters
On-demand water heating systems
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Electrical Wiring
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Air Purifier Brands
Space Heaters Portable Heating
Generators
Backup power solutions
Heat Pumps
Air and ground source heat pump guides
Energy Costs
Cost analysis and savings
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Central Air Hvac Systems
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Seer Comparisons
Hvac Costs Location
HVAC Maintenance
Maintenance tips and schedules
Indoor Air Quality
Air monitoring and improvement
Water Heaters
Tank and tankless water heating
Batteries Solar
Fireplaces Stoves
Smart Home Thermostats
Ductwork Ventilation
Mold Moisture Control
Tax Credits
Evaporative Coolers Fans
HVAC Noise
Noise reduction and sound levels
Refrigerants
Refrigerant types and regulations
Air Quality
Indoor air quality and ventilation
Recently Updated Articles
Indoor Air Quality Testing: Professional IAQ Assessment Guide (2026)
Comprehensive guide to indoor air quality testing methods, pollutants, equipment, and when to test. Professional IAQ assessment protocols, interpretation, and improvement strategies for healthier homes.
HVAC Installation Cost by State: 2026 Pricing Guide (Interactive Map)
Compare HVAC installation costs across all 50 states. See average prices for AC, furnaces, and heat pumps by state with our interactive cost map and detailed pricing data for 2026.
HVAC Cost in California: AC, Furnace & Heat Pump Pricing for 2026
California HVAC installation costs $8,200–$16,800 in 2026. Get detailed pricing for central AC, furnaces, heat pumps, and mini-splits with Title 24 compliance costs, regional breakdowns, and available rebates.
HVAC Cost in Florida: AC, Furnace & Heat Pump Pricing for 2026
Florida HVAC installation costs $6,400–$13,000 in 2026. Get detailed pricing for central AC, heat pumps, and furnaces with regional breakdowns for Miami, Tampa, Orlando, Jacksonville, and more.
HVAC Cost in Illinois: AC, Furnace & Heat Pump Pricing for 2026
Illinois HVAC installation costs $7,100–$14,200 in 2026. Get detailed pricing for central AC, furnaces, heat pumps, and mini-splits with regional breakdowns for Chicago, suburbs, and downstate Illinois.
HVAC Cost in New York: AC, Furnace & Heat Pump Pricing for 2026
New York HVAC installation costs $8,500–$17,500 in 2026. Get detailed pricing for central AC, furnaces, heat pumps, and mini-splits with regional breakdowns for NYC, Long Island, Westchester, Buffalo, Albany, and more.
HVAC Cost in Texas: AC, Furnace & Heat Pump Pricing for 2026
Texas HVAC installation costs $6,000–$12,800 in 2026. Get detailed pricing for central AC, furnaces, heat pumps, and mini-splits with regional breakdowns for Houston, Dallas, Austin, San Antonio, and more.
HVAC Refrigerant Phase-Out: R-410A Ban Timeline & What Homeowners Need to Know (2026)
Complete timeline of the R-410A and HFC refrigerant phase-out under the AIM Act. Learn key dates, what's banned, what's replacing it, and how to plan for rising service costs.