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Whole-home humidifiers

Minnesota winters dry out your air. A whole-home humidifier adds the moisture your home and family need.

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Hand adjusting a digital wall thermostat

Comfort and protection

Balanced humidity eases dry skin, itchy eyes and sore throats, and helps protect wood floors, furniture and trim from cracking.

Installed with your furnace

A whole-home humidifier works with your heating system, so there are no portable units to fill.

Signs your air is too dry

  • Itchy eyes or a dry throat
  • Frequent static shocks
  • Cracking wood floors or trim
  • Dry, irritated skin

Common questions

What affects the cost of a whole-home humidifier?

Cost depends on the type (bypass, fan-powered or steam), the control you choose, how far the unit is from a water line and drain, and whether your furnace and ductwork need modifications. Steam models also need electrical service.

What humidity level should I set in winter?

Set it lower as it gets colder outside to prevent window condensation. University of Minnesota guidelines suggest a maximum of about 40 percent at 20°F to 40°F outside and about 25 percent between -10°F and 0°F.

What maintenance does a whole-home humidifier need?

Most evaporative models need the water panel replaced at least once each heating season, and some models need it more often. A technician can inspect the humidifier, its drain and its control during a fall furnace tune-up.

Can a humidifier be added to my existing furnace?

In most homes with a forced-air furnace, yes. A technician will check your furnace, ductwork, water supply and drain access to confirm which model fits.

Guides for homeowners

Hand adjusting a digital wall thermostat

Ideal Indoor Humidity in a Minnesota Winter

In a Minnesota winter, the right indoor humidity depends on how cold it is outside. This guide explains the ranges to aim for, why your windows tell you when it is too high, and how to adjust your humidifier.

Read the guide →Hand adjusting a digital wall thermostat

Whole-Home vs. Portable Humidifier: Which to Choose

A portable humidifier adds moisture to one room. A whole-home humidifier works with your furnace to treat the entire house. This guide compares coverage, upkeep, control and cost factors so you can decide.

Read the guide →New and used furnace air filters leaning against a furnace in a basement

Furnace Filter MERV Ratings Explained

A MERV rating tells you how well a furnace filter captures particles of different sizes. This guide explains the scale, what the EPA recommends, and how to pick a filter your furnace can handle.

Read the guide →Installer fitting round metal ductwork in an attic

Whole-Home Air Purification Options Compared

Media filters, UV lights and electronic air cleaners all install on your furnace, but they do different jobs. This guide explains what each one removes, its limits, and why the EPA warns against devices that produce ozone.

Read the guide →

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