Whole-House Humidifier
Installation in Southern NH
A.J. LeBlanc Heating installs Aprilaire bypass, fan-powered, steam, and standalone ducted humidifiers across Southern NH. Family-owned since 1928. Every install includes a humidistat with outdoor temperature compensation and our workmanship warranty.
Humidifier Types We Install
Bypass Humidifiers
Aprilaire 500 and 600 series bypass humidifiers use your furnace's heat to evaporate water. Reliable, low-maintenance, and the right fit for most Southern NH homes up to about 4,000 square feet.
Fan-Powered Humidifiers
A fan-powered humidifier adds its own fan for higher output than bypass units. It works even when the furnace fan is not running and suits Southern NH homes with higher ceilings or leakier construction.
Steam Humidifiers
Aprilaire 800 steam humidifiers boil water directly to produce clean steam. The highest and cleanest output, ideal for large homes, heat pumps, or hot water heating systems.
Automatic Humidity Control
Digital humidistats monitor indoor and outdoor temperature to automatically adjust humidity. High enough for comfort, low enough to avoid condensation on Southern NH windows.

The Right Humidity Makes a Huge Difference
In Southern NH, indoor humidity can drop below 15 percent during winter, drier than the Sahara. That causes static shocks, dry skin and lips, sinus irritation, hardwood floors that gap and squeak, and wood furniture that develops cracks. It also makes the air feel colder, so you end up running the heat higher. A whole-home humidifier from A.J. LeBlanc Heating keeps levels at a healthy 35 to 45 percent and automatically adjusts as outdoor conditions change.
- Installs on your furnace's supply or return ductwork
- Connects to existing water line and drain
- Controlled by a dedicated humidistat or integrated smart thermostat
- Automatic outdoor temperature compensation prevents window condensation
- Reduces static, dry skin, sinus issues, and wood damage
- Helps heat feel warmer at lower thermostat settings
Recent Aprilaire Humidifier Installations
Humidifier Brands
Aprilaire
Whole-house humidifiers, dehumidifiers, and media air cleaners. Aprilaire is the industry leader in indoor air quality products.
Learn more
Honeywell
Honeywell thermostats, zone panels, zone dampers, and zone valves. A premier installer for new and existing Honeywell control systems.
Learn moreHumidifier FAQ
What humidity level should I aim for in winter?
35 to 45 percent is the typical comfort range. In very cold Southern NH weather, you may need to drop below that to avoid window condensation. Smart humidistats handle this automatically by lowering the target as outdoor temperatures fall.
Bypass vs steam humidifier, which is right for me?
Bypass humidifiers are reliable, quiet, and affordable. They are fine for most Southern NH homes up to 4,000 square feet with a traditional furnace. Steam humidifiers work with any heating system including heat pumps and hot water heat, produce the most moisture, and work even when the furnace is not running. Larger or tighter homes benefit from steam.
How much maintenance is involved?
Bypass and fan-powered humidifiers need a new water panel once a year, which A.J. LeBlanc Heating can do at annual maintenance. Steam humidifiers have a replaceable canister that lasts 1 to 2 seasons depending on water quality. Otherwise very little.
Will a humidifier work with my heat pump?
Heat pumps do not produce as much heat as furnaces, so traditional bypass humidifiers do not evaporate well off heat pump air. Steam humidifiers are the right choice for heat pump homes in Southern NH. They generate their own moisture independently of the heat source.
Southern NH Communities We Serve
Free estimates and prompt service across Southern New Hampshire. Find your town for local details, or call 603-623-0412.
Services in Southern NH's Largest Cities
Manchester
Nashua
Whole-House Humidifier Installation
A.J. LeBlanc Heating sizes and installs the right humidifier for your Southern NH home and heating system. Aprilaire-certified technicians, professional installation, and a workmanship guarantee on every install.
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