Buying Guide: Rinnai Gas Heaters

Gas heating is one of the most efficient type of heating. And when it comes to gas heaters, Rinnai is one of the foremost names in the industry, for both consumers and businesses. 

Today, we’ll show you why Rinnai is a byname for gas heaters, and why we proudly carry this brand at Total Home Supply. 

Who is Rinnai?

Rinnai Corporation is a Japanese consumer appliance brand that specializes in gas water heaters and room heaters. In fact, Rinnai is the largest manufacturer of gas appliances in Japan.

The company got its start in 1920 by selling oil stoves, before later branching out to gas tabletop stoves, ovens, gas heaters, and water-heating appliances.

Over the ensuing decades, Rinnai expanded significantly, from Japan to dozens of countries worldwide.The brand’s motto centers around “creating healthy and comfortable lifestyles,” providing energy appliances that focus on comfort, convenience, safety, and environmental awareness.

In the US, many associate Rinnai with its water heaters (especially tankless systems). But the company actually has a much longer history making gas heaters and heating appliances, for both residential homes and commercial spaces.

What Makes Rinnai Heaters Stand Out

Several factors contribute to Rinnai’s reputation and competitive edge in the heater market

✔ Rich Legacy

With more than a century in the gas appliance business, Rinnai brings deep expertise in combustion, gas flow, and safety standards, especially since gas heaters are one of its earliest core products since its founding days.

✔ Quality and Reliability

Rinnai promotes high manufacturing standards and eco-awareness. The company boasts global ISO certification and a long history of durable, efficient, well-engineered gas appliances, including heaters.

✔ Diverse Heating Lineup

Rather than sticking to just one type of heater, Rinnai offers a broad lineup: from compact gas space heaters and fan-forced heaters to more robust flued systems suitable for larger spaces.

This is why Rinnai heaters are used by households and commercial businesses across many countries.

✔ Efficiency

Their gas heaters (especially the Energysaver series) deliver efficient heating while keeping emissions low — a crucial factor for indoor air quality.

✔ Flexibility

Many models support both natural gas or LPG, making them adaptable to different energy infrastructures.

Rinnai Gas Heater Product Lineup

Ventless Convector Gas Heater

Rinnai’s ventless convector gas heaters use a convection fan to evenly distributes warmth throughout the space. They are designed for energy efficiency and are available in natural gas and liquid propane models.

Featured Rinnai convection gas heater:

Rinnai FC824 24,000 BTU Vent Free Fan Convector Gas Heater

Designed to heat hard-to-warm spaces, this 24,000 BTU heater (natural gas; 22,000 BTU for liquid propane) evenly distributes warmth with its convection fan. Featuring modulating technology with a gas valve and variable speed blower, it uses only the necessary amount of gas, ensuring energy-efficient heating for your home or business.

This heater is perfect for supplemental heating in homes, apartments, and commercial spaces. Its clean design, quiet operation, and advanced features make it one of the most efficient and user-friendly heaters available. Suitable for modular and mobile homes, it offers safe and consistent warmth without venting requirements.

Direct Vent Wall Furnace

The EnergySaver line of direct vent wall furnaces use modulating technology for enhanced energy efficiency. This feature constantly monitors the room temperature and detects temperature fluctuations, so the furnace provides just the right amount of heat at any given moment. 

The room temperature is monitored 2″ from the floor, and the system can detect temperature changes of less than 1°F. If a door opens and a sudden gush of cold air rushes into the room, the furnace automatically adjusts the fan speed and BTUs to restore the room back to its set temperature quickly, providing dynamic warmth adjustments and better comfort.

Featured Rinnai EnergySaver Direct Vent Wall Furnace:

Rinnai EX38DT 38400 BTU EnergySaver Direct Vent Wall Furnace

This Direct Vent Wall Furnace with 38,400 BTUs is an excellent source of heat for large rooms across most regions. It uses modulating technology to maximize efficiency, ensuring that it delivers just the right amount of heat. The unit continuously monitors room temperature, detecting fluctuations of less than 1°F. When a door opens and cold air rushes in, the furnace automatically adjusts fan speed and BTU output to restore the desired temperature quickly and efficiently.

It also comes with a built-in programmable thermostat that includes two timer settings and can be connected to a Wi-Fi-enabled thermostat, giving you even more flexibility over your comfort control, whether you’re away from home or in another room. In case of a power outage, the furnace will safely shut off the gas and automatically restart once power is restored.

Shopping for a Rinnai Gas Heater?

Rinnai combines Japanese engineering heritage and efficient gas heating technology to deliver robust and efficient gas heaters. If you’re looking for a gas heater that delivers reliability, comfort, and energy-efficient performance, look no further than a Rinnai heater. At Total Home Supply, we’ve proudly carried this brand for years, as evidenced by the numerous positive reviews in our product pages. Get yours today!