Resources · HVAC
HVAC, explained without the sales pitch.
Understand the equipment that heats, cools, and filters your home — then decide what actually needs doing.
Understanding Your HVAC System
A plain-language tour of the equipment that heats, cools, and filters your home — and the small habits that keep it running for years longer.
9 min · July 2026Read guide
How Central Air Conditioning Works
Air conditioning does not create cold. It moves heat. Once that clicks, most cooling problems become easy to reason about.
8 min · July 2026Read guide
Furnace vs. Heat Pump
Two very different ways to heat a house. The right answer depends on your climate, your fuel prices, and how long you plan to stay.
8 min · July 2026Read guide
More HVAC guides coming
Heat Pumps ExplainedComing soon
Air Handler vs. FurnaceComing soon
HVAC Filter GuideComing soon
HVAC Maintenance ChecklistComing soon
Signs Your HVAC Is About To FailComing soon
Protect your HVAC with Sentinel Home
Smart Capture
Record equipment details in seconds.
Asset Vault
Every system, manual, and warranty in one place.
Repair Guide
Understand the problem before you call anyone.
Maintenance Reminders
Well-timed prompts for seasonal work.
Replacement Forecast
See what is coming before it fails.
Home Health Score
One number for the state of your home.