We fix what's broken, fast, and we don't disappear after the invoice. Same-day appointments available across Stonington and the surrounding zip codes.
No automated menus for emergencies — a real person handles the call.
Ask as many questions as you want; we'd rather over-explain than leave you unsure.
Warranty details are explained clearly so you know exactly what's covered going forward.
Leonard HVAC grew one honest service call at a time in communities like Stonington. Every technician we send to your door is background-checked, factory-trained, and licensed to work on the systems installed throughout Stonington, CT.
We're not the biggest name in Stonington — we're the company that tells you what actually needs fixing instead of what pads the ticket. We carry the credentials Stonington inspectors and property managers expect to see, and we keep that documentation available on request for every job, routine or emergency.
Stonington's climate swings hard, and generic national playbooks don't always fit. That local knowledge shapes how we diagnose problems — it's the difference between a tech who's guessing and a tech who's seen your exact situation a hundred times before.
Trust in this industry gets eroded fast, and it takes real consistency to earn it back. That's the gap we built Leonard HVAC to close. Every dispatcher, every technician, and every follow-up call is held to the same standard, because a customer who trusts us once tends to call us again — and Stonington is a small enough community that reputation travels fast.
When you call +1-866-805-8548, you're talking to someone who understands the local permitting process, the common equipment brands installed in Stonington homes, and realistic scheduling given local demand. We keep parts inventory stocked based on what actually fails most often on Stonington's housing stock.
We cover the full range of heating, cooling, and air quality work Stonington properties actually need.
A dead system in the middle of a heat wave or a cold snap isn't just inconvenient — it can be a real safety issue for kids, pets, and older residents. Our Stonington dispatch team moves emergency tickets to the front of the schedule so a technician is diagnosing your system as fast as physically possible.
We keep the truck stocked with the parts that fail most often on the equipment common to Stonington homes, which is exactly why most repairs don't require a return visit.
If your unit is past its expected service life, running loud, or spiking your utility bill, a replacement conversation is worth having. We walk Stonington homeowners through efficiency ratings and how they translate into real monthly savings before a single piece of equipment gets ordered.
Every install ends with a performance test, confirming airflow, temperature split, and refrigerant charge are all where they should be before we consider the job finished.
Commercial equipment operates differently than a residential unit, and it needs technicians who actually understand rooftop packages and multi-zone systems. Our commercial division services rooftop units and package systems across Stonington, with priority response for facilities that can't afford downtime.
We understand that a commercial call isn't just about comfort, it's about keeping a business open.
Preventive maintenance is the cheapest repair you'll ever pay for, because it's the one that prevents the bigger bill. Beyond standard tune-ups, we also handle indoor air quality upgrades for homes with allergy or asthma concerns for Stonington households that want more than just temperature control.
A tune-up typically takes under an hour and covers the checkpoints most likely to catch a problem before it becomes a breakdown.
This is the standard every Stonington technician on our team is held to.
Every repair comes with a workmanship warranty explained in plain terms before we leave.
If a competitor's written quote for the same scope of work is genuinely lower, ask us about it.
A technician doesn't consider the job done until the system is tested and performing correctly.
A little attention to how your system is running can save you a lot of money and discomfort.
Rattling during startup often means a component has worked itself loose and needs tightening before it causes real damage.
Weak airflow from the vents often traces back to a clogged filter, a failing blower motor, or leaking ductwork.
A tune-up often identifies exactly what's driving the extra energy use.
A system that won't hold a steady cycle is often fighting a sizing issue, a thermostat problem, or a refrigerant imbalance.
A burning smell should never be ignored — it can indicate an electrical issue that needs immediate attention.
We'll always tell you honestly when a repair is the better call versus when it isn't.
No inflated "emergency surcharge" games — the number we quote is the number you pay.
Emergency calls get moved to the front of the line automatically.
We don't consider a job finished until the system is actually performing correctly.
Our techs recognize brand-specific quirks instead of learning your system on the job.
We explain what failed, why it failed, and what the options are.
Maintenance plan members get priority scheduling and discounted rates.
Every review below reflects an actual service call in the Stonington area.
"I called three other companies first and this was the only one that actually picked up. The pricing was exactly what they quoted over the phone."
"We've used them for our maintenance plan for two years now and never had a surprise breakdown. Techs are always polite, always on time, and clean up after themselves."
"Had a full system replacement done and it was the smoothest home project I've had in years. New system is noticeably quieter and our energy bill actually dropped."
"As a property manager, having a company that actually answers after-hours calls is rare. Kept our kitchen running through the weekend rush."
"Got quotes from four different companies for a replacement and this was the only one that actually walked me through the load calculation. Installation crew was in and out in a day and left the space cleaner than they found it."
"The tech walked me through what he was checking as he went, which I really appreciated. Genuinely relieved to have found a crew that answers when it matters."
Understanding what typically fails helps homeowners know what to watch for and when a repair call is worth making before things get worse.
The shift between peak heating and peak cooling demand is exactly when older or neglected equipment tends to fail. Filters should be checked monthly during heavy-use seasons and replaced roughly every 60-90 days depending on your household and any pets.
Keeping vents unblocked by furniture and rugs helps maintain even airflow throughout the home. None of this replaces a professional tune-up, but it does reduce the wear that leads to premature breakdowns between visits.
Our technicians train across the major residential and commercial equipment lines, so you're not limited to a single brand's service network. If your system was installed by a different company entirely, that's not a problem — we service equipment regardless of who originally put it in, and we'll pull the model and serial information to confirm parts compatibility before any repair begins.
Every tech on our Stonington roster goes through background checks, licensing verification, and ongoing manufacturer training.
Over a decade in residential heating and cooling, with a focus on load calculations and full system replacements.
Runs point on overnight and weekend emergency calls throughout Stonington.
Works directly with Stonington property managers to schedule around business hours.
Standard appointments are usually scheduled within 24-48 hours, while true emergencies jump the queue.
Yes — every job gets a clear quote before any repair work begins, so there are no surprise line items on the invoice.
We staff after-hours dispatch specifically because HVAC failures rarely happen on a convenient schedule.
Every technician we send is licensed in accordance with Stonington, CT requirements and carries full liability coverage.
We never push a replacement when a straightforward repair will genuinely solve the problem.
Plan members typically see fewer surprise breakdowns because small issues get caught during routine visits.
We cover Stonington and the surrounding communities, including the zip codes listed in our coverage section below.
Yes, we run separate residential and commercial divisions, both fully licensed and equipped for their respective equipment.
Yes, we service systems regardless of who originally installed them.
Ask about financing during your in-home estimate to see what fits your situation.
Most Stonington homes benefit from two tune-ups a year — one before cooling season and one before heating season.
Beyond basic safety checks, it's best to leave diagnosis to a licensed technician rather than attempting a repair yourself.
Ask about current after-hours rates when you call +1-866-805-8548.
Most standard repairs are completed in under two hours once the technician has diagnosed the issue and you've approved the quote.
Let dispatch know ahead of time if access will be handled differently than a standard homeowner visit.
Housing stock varies a lot across Stonington — older homes often still run original ductwork that needs different care than the sealed, high-efficiency systems going into newer builds.
We also work regularly with homeowners associations, property management companies, and multi-unit buildings throughout Stonington.
We accept standard payment methods for repairs and smaller jobs, and we'll always tell you upfront what a given service is likely to cost so there's no last-minute scramble to figure out payment. If a rebate or local incentive program applies to your Stonington installation, our technicians will flag it during the estimate rather than leaving you to track it down after the fact.
We dispatch throughout Stonington and the neighboring communities, keeping response times tight because our trucks stay close to home.
Coverage isn't limited to a single neighborhood or subdivision — our Stonington dispatch zone stretches across the metro area and into the surrounding suburbs and unincorporated communities.
