Official Heating & Cooling
Harmonic HVAC Crystal Lake (formerly Official HVAC) proudly serves #McHenryCounty & #LakeCounty +more 36 years experience with sales, service and installations.
Hands on ownership withpersonal involvement in every installation of new equipment. Always available to answer any HVAC related questions from our customers.
Feeling a draft? It's not just you. EnergyStar estimates that up to 30% of the air moving through your duct system might be escaping through leaks, holes, or poorly connected ducts. That's like throwing money out the window! But don't worry, our team is on it. Give us a ring at 800-350-HVAC for an inspection and we'll patch things up.
CALL 800-350-HVAC It's not too early to schedule your heating and cooling Spring maintenance visit. Give us a call! 800-350-HVAC
04/15/2024
04/12/2024
What are your thoughts??? Post in the comments your first thought!!!
Upgrade to higher-quality air filters to better remove the tiny particles that make life miserable for allergy sufferers.
We’re here to make sure your HVAC system is working as it should to keep your home comfortable and your indoor air quality at its best. Talk to us about what we can do to help! Call 800-350-HVAC for more details.
04/08/2024
Vacuum, dust and wash bedding often.
We’re here to make sure your HVAC system is working as it should to keep your home comfortable and your indoor air quality at its best. Talk to us about what we can do to help! Call 800-350-HVAC for more details.
04/02/2024
Today's National celebration days:
Add portable air purifiers to the rooms you’re in the most.
We’re here to make sure your HVAC system is working as it should to keep your home comfortable and your indoor air quality at its best. Talk to us about what we can do to help! Call 800-350-HVAC for more details.
03/22/2024
Functionality of your plumbing fixtures can save your water bill by addressing any leaks, or prevent a costly bigger repair in the future!
03/22/2024
TIP THURSDAY: Did you know…?
Lowering your thermostat by just a few degrees while you're sleeping or away can lead to significant savings on heating costs without compromising your comfort. It's a simple adjustment that can make a big difference!
So many of us rely on space heaters. But did you know that they cause nearly 25,000 house fires every year? So use them only when you have to. Better yet, call Call Harmonic Crystal Lake at 800-350-HVAC to learn about alternatives.
It’s dustier in your home during winter. Why? People and pets spend more time indoors. Fireplaces add dust. The air is drier, so we shed more skin cells. Those fur babies leave more dander and hair. Yuck. Clean more often for better air quality — and call Call Harmonic Crystal Lake at 800-350-HVAC to learn about whole-house humidifiers!
02/02/2024
Our Harmonic team visiting the national show in Chicago, Illinois. So many great vendors that we work with including AprilAire, , Mitsubishi Electric, RGF Environmental Group Inc., and Nu-Calgon among others.
Harmonic Heating & Air Conditioning - Harmonic Handyman & Home Renovation Services Plumbing & Electrical - Official Heating & Cooling - Arrow Plumbing Libertyville
02/02/2024
Furnace install with 4” AprilAire media and Aprilaire Humidifier. These 2 IAQ items help make the home significantly “Smarter, Healthier, and more Efficient”. 800-350-HVAC
01/30/2024
For pricing and info on RGF Environmental Group Inc. products, call 800-350-HVAC. www.HarmonicChicago.com
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Telephone
Website
Address
5214 S Illinois Rt 31
Crystal Lake, IL
60012
Opening Hours
| Monday | 8am - 5pm |
| Tuesday | 8am - 5pm |
| Wednesday | 8am - 5pm |
| Thursday | 8am - 5pm |
| Friday | 8am - 5pm |
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