Articles – Johnson Mechanical LLC

A homeowner uses a wet-dry vacuum to clear a PVC condensate drain beside an indoor air handler.

October 30, 2026

Clearing a Blocked HVAC Condensate Line Safely in Portage, WI

A homeowner slides a pleated air filter into the return-air compartment of a residential furnace.

March 5, 2026

MERV Filters Explained for Portage, WI Homes

Technician inspecting an aging furnace and central air conditioner in a residential utility room.

February 26, 2026

How Long Should an HVAC System Last in Portage, WI?

Technician inspecting attic insulation beside ductwork and recessed ceiling fixtures in a residential home.

February 19, 2026

Portage, WI Home Comfort: Why Insulation Matters for HVAC Performance

Technician recovering refrigerant from an outdoor heat pump beside a home with tools and storage cylinder.

February 12, 2026

What HVAC Refrigerants Mean for Homes and the Environment in Portage, WI