Straight answers on heat pumps.

Plain explanations of sizing, refrigerants, and system types. Written to help you buy the right equipment once.

Planning a multi-zone system: pick the outdoor unit, then the heads

One outdoor unit, two to five rooms on their own thermostats. How to match head capacity to the condenser and avoid the classic mistakes.

How a heat pump heats at all, why capacity drops with the temperature, and how to read cold-climate ratings before you buy.

The unglamorous parts that decide whether an install looks clean and lasts: what each one does and when you need it.

What the numbers on the spec sheet actually measure, what counts as a good score, and what the Energy Star mark does and doesn'...

The base rule, when to size up or down, and why an oversized unit is a worse buy than a right-sized one.

Single zone, multi zone, or central ducted. How the three system types differ, where each one wins, and how to match one to the...

R410A is on its way out. What the two replacements actually are, which NG Trade series runs each one, and what changes when you...

Sizing, refrigerants, single zone or multi. Ask us in English or Spanish.

Premium inverter heat pumps, stocked in California and Texas and shipped nationwide.