Correct sizing is one of the most overlooked parts of HVAC comfort and efficiency. This guide explains air conditioner sizing mistakes and why it matters for Greater Vancouver homes — and how ROMA Heating & Cooling gets it right.
Why sizing matters
An incorrectly sized system causes real, ongoing problems:
- An oversized system short-cycles, wastes energy and wears out faster
- An undersized system runs constantly and never quite keeps up
- Poor sizing creates hot and cold spots and humidity problems
- It shortens equipment life and raises energy bills
How ROMA sizes equipment correctly
We base sizing on a proper heat-loss/heat-gain calculation — not a rule of thumb — accounting for your home’s size, insulation, windows, layout and the local climate. That ensures even comfort and efficient operation.
Get it sized right with ROMA
ROMA Heating & Cooling has served Greater Vancouver homeowners since 1999. We’re a TSBC-licensed gas contractor (LGA0202903), fully bonded and insured, with Red Seal–trained technicians, a 4.8-star rating from 158+ Google reviews, upfront flat-rate pricing and 0% financing (OAC). Call (604) 704-0300 for a free, no-obligation assessment.
What Our Customers Say
“Called on the weekend with our A/C not working and they were the only company that answered. Scheduled to come on Monday.”
— sandy quek, Google review (★★★★★)
“Upgraded to a smart thermostat. ROMA’s technician installed it and guided us through its features.”
Rather have a licensed pro handle it? Fast, honest help across Greater Vancouver.Call (604) 704-0300Free Estimate— Keith Getty, Google review (★★★★★)
Frequently Asked Questions
How do I know if my system is the wrong size?
Short-cycling, constant running, uneven temperatures and high bills are common signs. A load calculation confirms whether your equipment is correctly sized.
Why not just match my old system’s size?
Homes and equipment change over time. A proper load calculation often reveals a different ideal size, especially after renovations or insulation upgrades.
Do you do load calculations?
Yes — correct sizing is part of every ROMA installation quote, so you get even comfort and efficient operation.
How do I book an assessment?
Call (604) 704-0300 for a free, no-obligation in-home assessment across Greater Vancouver.
Related Services
- Residential AC Repair
- AC Not Blowing Cold Air
- AC Leak Detection & Repair
- AC Compressor Troubleshooting
- Heat Pump Not Cooling
Call ROMA Heating & Cooling Today
For fast, professional diagnosis and repair anywhere in Greater Vancouver, call (604) 704-0300 or email info@romaheating.ca. Same-day and after-hours service, gas-licensed and insured, serving the Lower Mainland since 1999.
What Greater Vancouver Homeowners Say
“Nelson worked hard to get the NTI unit fixed. He was always polite, courteous and on time.”
“As always Nelson was super efficient. Showed up on time and was quick to work. I had a full maintenance done on the fireplaces and furnace. He was awesome. I won’t use anyone else.”
“Excellent service. Andy had a spare Carrier inducer with him which saved us time.”
“Was very prompt to respond to our issues. Technician was scheduled for the day following my initial call.”
“Very professional heating company. Price is reasonable, excellent work.”
“Highly recommend this company. It was a pleasure dealing with Shawn and Nelson.”
“Professional and courteous technicians with attention to detail and customer needs.”
“Always great, friendly service. Serviced the hot water on-demand system. Honest and informative. Thanks!”
“Speedy response time, honest, and professional service from start to finish.”
Why Greater Vancouver Trusts ROMA Heating & Cooling
ROMA Heating & Cooling has installed, repaired and maintained heating and cooling systems across Metro Vancouver since 1999. Our team are TSBC-licensed gas fitters (Gas LGA0202903) and Red Seal-trained technicians — licensed, bonded and insured — and we back every job with upfront, flat-rate pricing and a 100% satisfaction guarantee. We hold a 4.8★ rating from 221+ Google reviews.
- Authorized for 30+ brands (Lennox, Carrier, Viessmann, Navien, Rheem & more)
- Upfront flat-rate pricing — no overtime or hidden fees
- Free, no-obligation estimates on new installations
- Locally owned & operated in Burnaby, BC
No Hidden Fees
Our service rates are transparent and easy to understand. You approve upfront, flat-rate pricing before we start — so you never get a bill you didn’t expect.
Licensed & Bonded
ROMA is a TSBC-licensed gas contractor (Gas LGA0202903). Our technicians are bonded, insured and Red Seal-trained — qualified for any heating or cooling system.
Free Estimates
We offer free, no-obligation estimates on new installations — furnaces, boilers, heat pumps, air conditioners, tankless and hot-water tanks.
ROMA Heating & Cooling is a trusted HVAC contractor serving Metro Vancouver since 1999. We specialize in furnace repair, heat pump installation, boiler services, air conditioning, and emergency heating solutions for residential, commercial, and government clients. Available 24/7, our certified technicians deliver fast, reliable, and affordable HVAC services across Greater Vancouver.