Lennox dealer · Cobourg since 2005
Air Conditioner Installation in Cobourg and Northumberland
Quiet, efficient Lennox central air conditioners, sized to your home and installed by our licensed Cobourg team, with a free in-home quote.
Serving Cobourg, Port Hope, Northumberland, Quinte and Peterborough. Office 9 am to 5 pm, 7 days. Emergency service 24/7.
Get your free quote
4.9 ★ on Google
From 895 reviews by local homeowners.
Local since 2005
Showroom and service team on Brook Road North, Cobourg.
Written guarantees
On every installation. See them.
$1,000 Off a New Lennox Furnace
Get your home ready for winter. Save $1,000 on a qualifying new Lennox furnace, installed by our local Cobourg team. Offer ends December 1, 2026.
Signs it is time for a new air conditioner
- Your AC is 12 to 15 years old or more
- It uses older R-22 refrigerant, which is no longer produced
- Repairs are frequent or the system needs a compressor
- Rooms stay warm or humid even with the AC running
- Summer hydro bills keep climbing
Lennox air conditioners we install
We install central air conditioners from all three Lennox collections and recommend the right fit for your home and budget. Current models and availability are confirmed with your quote.
| Collection | Example models | Compressor | What it means for you |
|---|---|---|---|
| Dave Lennox Signature | SL25XC1 | Variable capacity | Lennox’s quietest, most efficient AC with precise humidity control |
| Elite | EL18XCV | Variable speed | Very quiet with strong efficiency and even comfort |
| Merit | ML17XC1, ML14XC1 | Single stage | Reliable, efficient cooling at a lower upfront cost |
Variable-speed and variable-capacity units run longer at lower speeds, which removes more humidity and keeps temperatures steadier than single-stage models.
Thinking about a heat pump instead?
A heat pump cools exactly like an air conditioner in summer, and also heats your home efficiently in spring, fall and much of the winter. Paired with your furnace, it can cut heating costs and may qualify for rebates. Compare heat pumps.
What to expect
Step 1
Free in-home quote
We measure your home, check your ductwork and electrical, and explain options in plain language.
Step 2
Professional install
Licensed technicians set the outdoor unit and indoor coil, run refrigerant lines and wiring, and pull a proper vacuum.
Step 3
Startup and testing
We charge refrigerant to spec, test airflow and temperatures, and register your warranty.
Add-ons that make a difference
UV coil light
Keeps the new coil free of mould and bacteria. See UV lights.
Better filtration
A Lennox media air cleaner protects the coil and cleans your air. See filtration.
Humidity control
Balance indoor humidity year round. See humidity control.
What Comfort Zone customers say
Just recently contacted them for a service call and they responded quickly. Awesome all around experience. Highly recommend!
I called in the mid morning for a propane furnace issue and was fixed and running by 130 in the afternoon.
AJ the service tech was very friendly, knowledgeable and explained exactly what was causing the issue and remedied it accordingly.
Five stars all the way around.
Pay Monthly Using NGL
Spread the cost of a new furnace, heat pump, air conditioner or water heater into one monthly payment, with parts, labour and repairs covered for the term.
Frequently asked questions
How long does AC installation take?
Most replacements are done in one day. New installations without existing ductwork or electrical take longer.
What size air conditioner do I need?
We calculate your home’s cooling load from size, insulation, windows and sun exposure, rather than guessing from square footage.
Should I replace my furnace and AC together?
If both are older, replacing them together saves labour and makes sure the indoor and outdoor equipment are matched for efficiency and warranty.
Can I add central air if I do not have ductwork?
Yes. A ductless mini split is often the best choice for homes without ducts. See ductless options.
Do you offer monthly payments?
Yes. You can pay monthly using NGL, with parts, labour and repairs covered for the term.
Related services
AC repair
Fast repairs on all makes and models.
AC maintenance
Spring tune-ups that protect your warranty.
Heat pumps
Heat and cool with one system.
Get your free AC quote
Call us or book online and we will confirm within 24 hours. Office hours 9 am to 5 pm, 7 days a week, with emergency service 24/7.