HVAC
Heating and cooling is a major part of home comfort and energy use. These guides cover routine maintenance and common performance questions, and explain why correct equipment sizing always comes from a professional load calculation rather than a rule of thumb.
HVAC calculators
HVAC guides
How Often Should You Change an Air Filter?Filter changes are the cheapest maintenance you can do. How often depends less on the calendar and more on your home.Read guide →Why Is My AC Not Cooling?Start with the simple, safe checks: filter, thermostat, and airflow. If those are fine, the cause may need a technician.Read guide →What Size HVAC System Do I Need?Correct size is not about square footage alone. Here is what goes into a real load calculation and why it matters.Read guide →What Does HVAC Replacement Cost?Rather than one number, HVAC cost is a range shaped by equipment, efficiency, ductwork, and labor. Here is how to plan.Read guide →
What to know before you buy
Sizing is not a guess
Correct equipment size comes from a load calculation that accounts for insulation, windows, climate, and ductwork. A rough BTU estimate is a starting point only.
Bigger is not better
Oversized equipment cycles on and off too often, which can reduce comfort and efficiency. Undersized equipment struggles on the hottest and coldest days.
Maintain before you replace
Regular filter changes and professional service can solve many performance complaints. Consider maintenance before assuming you need new equipment.