Contact us for 5% off for seniors and veterans on service calls

Janssen Logo Full

People-First HVAC, Plumbing, and Insulation Services in Alton, IL

Proudly offering cost-effective, timely home service solutions that bring the comfort back to your home in Alton, Bethalto, Edwardsville, or the surrounding areas.

Whether you need AC maintenance, a heater replacement, insulation installation, or plumbing repairs in Western Illinois, you can call Steve for fast and friendly service.

Schedule now
Call Steve

About us

At Janssen, we’re committed to keeping your Western Illinois home comfortable and functional year-round. We’re a team of dedicated professionals based in Alton, IL who work diligently to quickly and comprehensively solve any HVAC, plumbing, or insulation problems that disrupt your home’s peace.

We offer a variety of maintenance, repair, and installation services to the Greater Alton area, including Edwardsville, Wood River, Bethalto, and even St. Louis.

Our areas of expertise include:

  • Heating
  • Cooling
  • Plumbing
  • Insulation

Our guarantee

When you work with Janssen, rest assured that your satisfaction is our top priority. Our goal is to provide Alton and the surrounding communities with reliable, cost-effective HVAC, plumbing, and insulation services that solve your problems without creating new ones.

Whether you need a new HVAC system installed, insulation upgrades, or just a leaky pipe repaired, we promise transparent pricing, honest recommendations, and to get the job done right the first time, every time.

No unnecessary upsells, half-finished work, or missed deadlines. Just results.

  • Licensed, bonded and insured
  • Over 20 5-star Google Reviews
  • Veteran-owned
Get in Touch

Our Services

Dealing with HVAC and plumbing issues is frustrating, stressful, and uncomfortable. Nobody wants to come home to a sauna in the summer, bundle up inside during the winter, or deal with leaky faucets that waste water or keep you up at night.

At Janssen, we’re your all-in-one problem solvers. We offer reliable air conditioning repair and installation, furnace maintenance and replacements, plumbing fixes and installation, and insulation repairs, and much more.

Whether your home’s too hot or cold, leaks sprung up, or your energy bill is sky high, our full range of home services can help keep your space comfortable, efficient, and problem-free.

Heating

Fix or replace your heat pump to stay warm this winter.
Book service

Cooling

AC unit maintenance, repair, and replacement to help beat the heat.
Book service

Plumbing

Install or replace plumbing, or fix emergency leaks quickly to avoid damage.
Book service

Insulation

Lower your energy bills and keep temperatures consistent with efficient insulation.
Book service

Furnace Repair and Replacement in Western Illinois

Cold winters in Alton can push your heater to its limit, potentially leaving your family shivering and uncomfortable if your heat pump fails. With regular heater maintenance, same-day heater repairs, and complete furnace replacements, we’ll help your family to stay warm this winter.

Furnace repair near Alton, IL
Air conditioner Repairman in Madison County

AC Repair and Installation in Alton, IL

When the summer heat hits, you need a reliable air conditioner to keep your home cool. Our team provides regular AC maintenance as well as same-day air conditioning repair to help your system run smoothly. We also offer full AC installation, servicing and installing all the top brands to keep your Bethalto, Wood River, or Western Illinois home comfortable all year.

Plumbing Services for Madison County

From clogged drains to busted pipes, plumbing issues can range from inconvenient to dangerous and expensive. With same-day and emergency plumbing repair throughout the Greater Alton, IL area, we can help prevent major damage and resolve plumbing emergencies quickly. For less urgent needs, our team also provides plumbing installation and maintenance.
Plumber in Madison County fixing sink
Installing insulation

Insulation Installation and Repair in Bethalto and Beyond

Energy efficiency is essential for keeping your heating and cooling costs down, especially in climates like Alton’s that require both air conditioning and heating throughout the year. With our insulation installation and repair services, you can maintain a more consistent temperature, lower your energy bills, and reduce strain on your HVAC systems.

FAQ

What does HVAC stand for?
HVAC stands for Heating, Ventilation, and Air Conditioning, which includes the systems required to control your home’s temperature.
Yes, we are on call to provide quick and effective emergency service for HVAC and plumbing problems in Alton, Bethalto, Edwardsville, Wood River, and other local areas.
We recommend you schedule HVAC maintenance once or twice a year, depending on the age of your systems and how much you use them.
We offer some of the best brands on the market, including Trane, Carrier, Lennox, ICP Equipment, and Goodman to ensure your system lasts longer and meets your performance needs.
Proper insulation can save you 15% or more on energy bills while keeping a more comfortable temperature in your Western Illinois home year-round. It also reduces wear on your heater and air conditioning unit by limiting how often they’re used to maintain the temperature.

Where we service in Illinois & Missouri

  • St. Louis
  • Columbia
  • Edwardsville
  • Bethalto
  • Moro
  • Belleville
  • East Alton
  • Wood River
  • Hartford
  • South Roxana
  • Holiday Shores
  • Collinsville
  • Glen Carbon
  • St. Louis
  • Columbia
  • Edwardsville
  • Bethalto
  • Moro
  • Belleville
  • East Alton
  • Wood River
  • Hartford
  • South Roxana
  • Holiday Shores
  • Collinsville
  • Glen Carbon

Read our testimonials

Contact us

When the heat turns off, the air conditioning goes warm, or the faucet leaks, we’re here to help. Leave your contact information below, and we’ll reach out to schedule an appointment.

Links

Reach out

Social

Facebook Instagram Linkedin X-twitter Pinterest

© 2024 Janssen Heating, Cooling, Plumbing & Insulation | Terms & Conditions – Privacy Policy | Site by: VIE Media

Privacy Policy - Terms and Conditions