Illinois company spotlight · Company profile
Leith Heating
& Cooling
Heating • Air Conditioning • Indoor Air Quality
Leith Heating & Cooling brings a family-business approach to home comfort in St. Charles, Elgin and the Fox Valley. Founded in 2006, the company handles heating and cooling repairs, system replacements and regular maintenance, with customer feedback emphasizing clear explanations and courteous service.
Company Overview
Leith is a veteran- and family-owned HVAC business serving the Fox Valley. Its website describes a focus on lasting customer relationships and support for local youth recreation and education, including area sports organizations. Company background
BBB identifies Brian and Chloe Leith as co-owners and records a May 2006 business start. Its accreditation dates to November 2015. BBB business history
The company lists offices in St. Charles and Elgin. Homeowners can turn to it for a single repair, seasonal upkeep or a replacement system. Its advertised coverage includes St. Charles, Elgin, West Dundee and surrounding communities. Locations and services
Evaluation and Verification Summary
Reviewed against NHA’s established categories, with the evidence status shown for each.
Business Transparency
The website identifies two local offices, a contact number and service information.
Business Longevity
BBB records a 2006 start and identifies Brian and Chloe Leith as co-owners.
Customer Reputation
The St. Charles listing shows 5.0/5 from 230 Google reviews, exceeding NHA’s 4.3 selection threshold.
Warranty Protection
Obtain the applicable equipment and workmanship warranties with your proposal; NHA has not verified project-specific terms.
Licensing & Compliance
The company reports NATE and EPA credentials and Illinois Commerce Commission energy-efficiency installer certification. NHA has not independently verified their current status or applicable licensing.
Insurance Verification
NHA has not reviewed a current insurance certificate or confirmed coverage with an insurer.
Complaint Resolution
BBB’s rating and customer-review record were available. A complaint count could not be confirmed and is not represented as zero.
Independent Quality Review
NHA’s assessment draws on public sources and customer feedback, without a company interview or inspection of completed work.
Residential Services
Services advertised on the company website. Confirm coverage and scope directly.
Furnace Service
Heating repairs, maintenance and replacement systems.
Air Conditioning
AC installation, troubleshooting and seasonal maintenance.
Heat Pumps
Heat-pump systems for home heating and cooling.
Ductless & Zoned Comfort
Mini-split systems and HVAC zoning.
Indoor Air Quality
Dehumidifiers, filtration-related service and UV-light options.
Ductwork & Controls
Duct repairs, replacement and smart thermostats.
National Home Authority Review
Local roots. Clear communication.
A favorable choice to consider for homeowners seeking an established Fox Valley heating and cooling company.
The customer accounts available through Birdeye repeatedly praise professional technicians, explanations that answer homeowners’ questions and dependable maintenance visits. Several describe returning to Leith or recommending it to others. These are useful strengths when evaluating a contractor who may maintain a home’s comfort systems over many years. Read the customer feedback
Leith’s documented business history, identifiable ownership and range of residential services support its inclusion in NHA’s directory. Homeowners comparing proposals should still weigh the diagnosis, equipment options and written price for their own project.
Customer Ratings
Google via Birdeye: 5.0/5 from 230 reviews for the St. Charles location. This syndicated record may lag Google’s live listing.
BBB: A+ accredited, with 0 customer reviews shown. No BBB customer-star average is available. The complaint count could not be confirmed. BBB’s letter grade is separate from customer stars and NHA certification.
Sources and Review Date
Reviewed September 16, 2026. Business details and ratings can change.