RJ HVAC

Size my system

What are we covering?

Start with how many rooms. One room is a complete kit — outdoor, wall head, and line set in the box. Two or more rooms is a multi-zone: one outdoor unit, a head in each room. Field estimate, not a Manual J. Odd layouts, huge glass, or a shop with overhead doors — call and we’ll size it.

Not sure DIY vs Hyper Heat vs a contractor line? Which MRCOOL do I need?

How many rooms?

One complete kit. Hyper Heat is an option if this space has to heat a Flathead winter.

How big is this room?

Main job

Power at the outdoor unit

Who’s hanging it?

Outdoor unit

Single-zone kit

Hyper Heat 12k complete kit — 230V

Single space, about 550 sq ft, and you need it to heat. Hyper Heat is the Montana pick.

Usually added — not in the kit

Have us install it insteadBrowse all kits
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