Comprehensive Guide to Gas Furnace Types and Models in BC

Comprehensive Guide to Gas Furnace Types and Models in BC

When it comes to heating your home efficiently and reliably, gas furnaces are a popular choice in British Columbia (BC). As a premier provider of HVAC services, ROMA Heating & Cooling offers an extensive range of gas furnace types and models, catering to diverse needs and preferences. In this comprehensive guide, we’ll delve deeply into gas furnace options, gas usage calculations, and scenarios for BC homes. We’ll also cover various gas types, common errors and leaks, and how ROMA Heating & Cooling can assist at every stage—from consultation and installation to detection, fixing, and maintenance.

Understanding Gas Furnaces: Types and Models

Gas furnaces are integral to maintaining comfortable indoor temperatures, especially during the cold BC winters. They use natural gas or propane to heat air, which is then distributed throughout the home via a duct system. Here’s a detailed look at the types of gas furnaces available:

Types of Gas Furnaces

  1. Single-Stage Furnaces
    • Operation: Single-stage furnaces have a simple on/off operation. They run at full capacity when heating is required and shut off once the desired temperature is reached.
    • Efficiency: These furnaces are less efficient compared to multi-stage models, as they do not modulate their output based on demand.
    • Best For: Homes with consistent heating needs and those looking for an economical option.
  2. Two-Stage Furnaces
    • Operation: Two-stage furnaces can operate at two different levels of heat output—high and low. The low setting is used for most of the time, while the high setting is reserved for extremely cold conditions.
    • Efficiency: These furnaces offer better energy efficiency and more consistent indoor temperatures.
    • Best For: Homes in regions with fluctuating temperatures and those seeking enhanced comfort and efficiency.
  3. Variable Speed Furnaces
    • Operation: Variable speed furnaces use an electronically commutated motor (ECM) that adjusts the blower speed to match the heating demand.
    • Efficiency: These furnaces provide the highest energy efficiency, superior comfort, and quiet operation.
    • Best For: Homeowners looking for the best in energy savings, comfort, and noise reduction.
  4. Modulating Furnaces
    • Operation: Modulating furnaces can adjust their heat output in small increments, providing precise temperature control.
    • Efficiency: These are the most efficient gas furnaces, maintaining a constant and even temperature throughout the home.
    • Best For: Homes where maximum energy efficiency and comfort are priorities.

Popular Gas Furnace Models

Here are some of the top gas furnace models available through ROMA Heating & Cooling:

  1. Lennox SLP98V
    • Features: Variable capacity, 98.7% AFUE, ultra-quiet operation, and advanced humidity control.
    • Best For: Homeowners seeking top-tier efficiency and comfort.
  2. Trane XC95m
    • Features: Modulating operation, up to 97.3% AFUE, communicating technology, and built-in diagnostics.
    • Best For: Those wanting precise temperature control and reliability.
  3. Carrier Infinity 98
    • Features: Greenspeed intelligence, modulating gas valve, up to 98.5% AFUE, and excellent humidity control.
    • Best For: Homes needing high efficiency and superior climate control.
  4. Goodman GMVM97
    • Features: Variable speed ECM, modulating gas valve, 97% AFUE, and ComfortBridge technology.
    • Best For: Budget-conscious homeowners who don’t want to compromise on performance.
  5. Rheem Prestige R98V
    • Features: Modulating operation, up to 98.7% AFUE, EcoNet-enabled, and quiet performance.
    • Best For: Homes seeking high efficiency and advanced connectivity.
  6. Bryant Evolution 987M
    • Features: Modulating gas valve, up to 98.3% AFUE, Perfect Heat technology, and Wi-Fi capability.
    • Best For: Those who prioritize efficiency and smart home integration.
  7. Amana AMVM97
    • Features: Modulating gas valve, 97% AFUE, ComfortNet communications, and durable build.
    • Best For: Homeowners looking for reliable, efficient heating.
  8. Daikin DM97MC
    • Features: Modulating gas valve, 97% AFUE, ComfortNet compatibility, and quiet operation.
    • Best For: Homes needing consistent and efficient heating.
  9. Bosch Greenstar
    • Features: Advanced condensing technology, up to 95% AFUE, and compact design.
    • Best For: Those looking for a compact, efficient furnace.
  10. Navien NCB-E
    • Features: High-efficiency condensing system, 95% AFUE, and combination boiler capabilities.
    • Best For: Homes requiring both space heating and hot water.

Gas Usage Calculations for BC Homes

Understanding gas usage is crucial for managing heating costs and ensuring efficient operation. Here, we’ll break down the gas usage calculations for BC homes, providing three different scenarios.

Basic Calculation Method

The basic formula for calculating gas usage in a furnace is: Gas Usage (BTUs)=Furnace Input Rating (BTUs/hr)×Operating Hours

  1. Furnace Input Rating: This is the amount of gas energy the furnace uses per hour. It is usually listed on the furnace’s nameplate.
  2. Operating Hours: The number of hours the furnace runs.

Scenario 1: Small Home

  • Home Size: 1,200 square feet
  • Furnace Input Rating: 60,000 BTUs/hr
  • Operating Hours per Day: 8 hours

Daily Gas Usage: 60,000 BTUs/hr×8 hours=480,000 BTUs

Monthly Gas Usage (assuming 30 days): 480,000 BTUs/day×30 days=14,400,000 BTUs

Scenario 2: Medium Home

  • Home Size: 2,000 square feet
  • Furnace Input Rating: 80,000 BTUs/hr
  • Operating Hours per Day: 10 hours

Daily Gas Usage: 80,000 BTUs/hr×10 hours=800,000 BTUs

Monthly Gas Usage (assuming 30 days): 800,000 BTUs/day×30 days=24,000,000 BTUs

Scenario 3: Large Home

  • Home Size: 3,500 square feet
  • Furnace Input Rating: 100,000 BTUs/hr
  • Operating Hours per Day: 12 hours

Daily Gas Usage: 100,000 BTUs/hr×12 hours=1,200,000 BTUs

Monthly Gas Usage (assuming 30 days): 1,200,000 BTUs/day×30 days=36,000,000 BTUs

Types of Gas Used in Furnaces

Gas furnaces primarily use two types of gas: natural gas and propane. Each type has its own characteristics, advantages, and considerations.

Natural Gas

  • Source: Extracted from underground reserves and delivered through a network of pipelines.
  • Cost: Generally less expensive than propane, making it a popular choice for urban and suburban areas with established gas lines.
  • Efficiency: High-efficiency natural gas furnaces can achieve AFUE ratings of 90-98%.
  • Environmental Impact: Cleaner burning compared to other fossil fuels, producing fewer pollutants.


  • Source: A byproduct of natural gas processing and petroleum refining, stored in tanks and delivered by truck.
  • Cost: Typically more expensive than natural gas but can be more economical in areas without natural gas infrastructure.
  • Efficiency: Propane furnaces can achieve similar high-efficiency ratings as natural gas furnaces.
  • Environmental Impact: Produces more carbon dioxide per unit of energy compared to natural gas but still cleaner than many other fossil fuels.

Common Errors and Leaks in Gas Furnaces

Gas furnaces, like any mechanical system, can experience issues that affect their performance and safety. Here are some common errors and leaks to be aware of:

Common Errors

  1. Ignition Failures: Issues with the ignition system can prevent the furnace from starting. This could be due to a faulty ignitor, sensor issues, or problems with the gas supply.
  2. Thermostat Malfunctions: If the thermostat is not working correctly, it can cause the furnace to operate inefficiently or not at all.
  3. Dirty Filters: Clogged air filters reduce airflow, making the furnace work harder and less efficiently.
  4. Blower Motor Issues: Problems with the blower motor can affect the distribution of heated air throughout the home.
  5. Flame Sensor Problems: A dirty or malfunctioning flame sensor can cause the furnace to shut down as a safety precaution.

Gas Leaks

Gas leaks are a serious issue and can pose significant safety risks, including fire and carbon monoxide poisoning. Common signs of a gas leak include:

  • Rotten Egg Smell: Natural gas and propane are odorless but are treated with a chemical that gives them a distinctive sulfur-like odor.
  • Hissing Sounds: A hissing sound near the furnace or gas lines can indicate a leak.
  • Dead Plants: Vegetation near gas lines that suddenly dies can be a sign of a leak.
  • Higher Gas Bills: An unexplained increase in gas usage may indicate a leak.

Detection and Fixing

Detecting and fixing gas leaks and errors requires professional expertise. ROMA Heating & Cooling offers comprehensive services to identify and resolve these issues, ensuring your furnace operates safely and efficiently.

How ROMA Heating & Cooling Can Help

At ROMA Heating & Cooling, we provide a full suite of services to ensure your gas furnace operates at its best. From consultation and installation to detection, fixing, and maintenance, we are your trusted partner for all HVAC needs.


Choosing the right gas furnace for your home involves considering various factors such as home size, insulation, and heating needs. Our experts will guide you through the selection process, helping you choose a furnace that fits your requirements and budget.


Proper installation is crucial for the efficient and safe operation of your gas furnace. Our licensed technicians are trained to install all types of gas furnaces, ensuring they are set up correctly and according to manufacturer specifications.


Detecting issues early can prevent costly repairs and ensure your furnace operates efficiently. We use advanced diagnostic tools to identify potential problems, such as gas leaks and component failures.


Our team is equipped to handle all types of furnace repairs, from minor fixes to major overhauls. We use high-quality parts and follow industry best practices to ensure lasting repairs.


Regular maintenance is essential to keep your furnace running smoothly. Our maintenance services include:

  • Inspection: Thorough examination of all components to ensure they are functioning correctly.
  • Cleaning: Removing dirt and debris that can affect performance.
  • Tuning: Adjusting settings to optimize efficiency.
  • Safety Checks: Ensuring all safety features are working properly.

Emergency Services

We understand that furnace issues can arise at any time. That’s why we offer 24/7 emergency services to address urgent problems promptly.


Choosing and maintaining a gas furnace in BC requires careful consideration and professional expertise. ROMA Heating & Cooling is your go-to provider for all your HVAC needs, offering top-quality products and services to ensure your home remains warm and comfortable. From selecting the right furnace to ensuring it operates efficiently, our team is dedicated to providing exceptional service at every stage. Contact us today to learn more about how we can help you with your gas furnace needs.

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