Series Signature
A variable-capacity compressor that modulates continuously instead of running all-or-nothing. The quietest and most efficient in the range, and the best at controlling humidity.
Products
Central air conditioner
Cooling only, distributed through your existing ducts. Cheaper up front than a heat pump, but with no rebates and no contribution to heating.
Cooling the house, and nothing else
A central air conditioner makes cold and distributes it through your existing ducts. It is a simple, proven machine, and cheaper to buy than a heat pump of equivalent capacity.
It also sits idle eight months of the year.
The honest arithmetic before you choose
We install both, and we have no stake in steering you either way. But there is a line of reasoning that comes up at every evaluation, and it is worth stating plainly:
A heat pump is an air conditioner. The price difference between the two is real, but it has to be weighed against three things: the rebates a heat pump qualifies for and an air conditioner does not, the savings on your autumn and spring heating, and the fact that one machine replaces two pieces of equipment you would otherwise replace later.
In some cases the net gap is thin — occasionally it favours the heat pump. In others the air conditioner is the right answer: a home recently converted to natural gas, a tight budget, or a heating system still young enough that there is no reason to touch it.
We give you both numbers. The decision is yours.
Sizing matters more than the badge
An oversized air conditioner is a bad air conditioner. It cools the air too quickly, stops before it has pulled out the moisture, and leaves you in a cold clammy house — then restarts a few minutes later. Those short cycles wear out the compressor.
The right unit is the one that runs long and slow.
At a glance
- Efficiency (SEER2)
- 13.4 to 25.8 depending on model
- Sound level
- from 59 dB
- Refrigerant
- R-454B on new models, replacing R-410A
- Typical service life
- 15 to 20 years with annual maintenance
The Lennox lines
Series Elite
The most accessible variable-speed compressor Lennox offers, plus a more conventional two-stage option.
Series Merit
A single-stage air conditioner built for northern climates, where the cooling season is short.
Model line-ups change from year to year. We confirm what is available at the time of your quote.
Related services
- Installation An installation plan drawn for your house, sized from a real load calculation, and a crew that leaves the place as they found it.
- Maintenance The annual visit that protects your warranty, your bill and your equipment. Maintenance plans are available, depending on the equipment covered.
- Repair and emergency Equipment that has stopped, or is telling you it is about to. Emergency service is available in winter to customers holding a maintenance contract.
Frequently asked questions
Air conditioner or heat pump?
An air conditioner only cools. A heat pump does the same thing, plus heating for a good part of the year. The purchase-price gap is real, but the heat pump qualifies for rebates the air conditioner does not, and it lowers your heating bill. If you are replacing equipment anyway, get both prices before you decide.
What is the R-454B refrigerant change?
North American regulation is phasing out R-410A in favour of lower-impact refrigerants, R-454B among them. New equipment ships with it. An existing R-410A system does not need replacing because of this — it keeps being serviced normally, though the refrigerant will get more expensive over the years.
My air conditioner is loud. Is that normal?
Noise that appears or grows is never normal. It can be an unbalanced fan, a vibrating mount, or a compressor in trouble. A recent, well-installed unit is barely noticeable from a neighbour's patio. Have it checked before the problem costs you the compressor.
Why is my house humid even with the air conditioning running?
Usually because the unit is oversized. It hits the set temperature so fast that it shuts off before it has dehumidified the air. It is the most common sizing mistake, and no thermostat setting fixes it.
Our credentials
In business since 1955 RBQ licence 1136-3629-82
Let’s talk about your project
One of our advisors comes to your home, measures what needs measuring and walks you through your options — free, and with no pressure.
Monday to Friday · 8:30 a.m.–12 p.m. and 1 p.m.–5 p.m. Emergency service is available during the winter months to customers holding a maintenance contract.