Althoff Home Services
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Claim This BusinessAbout Althoff Home Services
Althoff Home Services is a hvac contractor serving Crystal Lake, IL and surrounding areas. With a 4.8-star rating from over 1,064 reviews, they are one of the highest-rated HVAC service providers in the Crystal Lake metro area. They offer 24-hour service, seven days a week. You can reach Althoff Home Services at (815) 455-7000 or visit their website for more information about their HVAC services.
What Customers Say
Every reviewer awards 5 stars, with three recent feedbacks mentioning same-day or next-morning response times. Technicians Shawn, Jim, Jeff, and Braydon appear by name across multiple testimonials praising thorough explanations and cleanup. No negative reviews appear in the sample, though reviewers consistently note pricing matched original quotes.
Working Hours
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Services
Heating Installation & Replacement
Furnace and boiler installation with Same-day estimates and next-morning new equipment installation available.
Cooling & Air Conditioning
AC installation, repair and maintenance for standard split systems and ductless mini-split configurations.
Emergency HVAC Service
24/7 emergency repairs with Fast Pass priority dispatch for White Glove Club members.
Plumbing Services
Drain cleaning, water heater service, sewer line work, gas piping, and sump pump installation.
Electrical Solutions
Panel upgrades, EV charging station installation, surge protection, and lighting rewiring.
Indoor Air Quality
Air filtration systems, humidifiers, dehumidifiers, and heat recovery ventilators for cleaner home air.