We speak HVAC so you don't have to
CONNECT with us!

our tools and detailed reports
can help you choose the best
furnace, boiler, heat pump or
central air conditioner.

GIBSON O4 Furnace

Write a review
Read more about GIBSON Furnaces

Overview of the O4

The Gibson O4 furnace, manufactured by Nordyne, is an oil-burning furnace with an AFUE rating of up to 84 percent. This multi-firing series offers output values in the range of 0.5 to 1.2 gallons per hour. The high boy and downflow models in this line can installed in horizontal applications. The lowboy is available with a front or rear flue while the compact model is designed with a rear flue only.

The Gibson O4 furnace is manufactured with a 22-gauge steel cabinet made more durable by a powder coat finish. Its Beckett burner is pre-wired, pre-assembled, tested in the factory and ready for a supply-line upon installation. A wraparound-style radiator allows for maximum heat transfer and is insulated with spun glass and aluminum foil to keep the unit cool to the touch. The direct-drive blower is permanently lubricated, and the 4-speed blower motor is thermally protected. All models of the Gibson O4 furnace come with barometric draft control.

The welded heat exchanger has large clean-out ports, and the burner and controls can be accessed easily via the removable door. The entire blower assembly and motor can be removed for maintenance as well.

Ask a Question about your GIBSON O4
Read all questions and answers

Consumer Reviews of the GIBSON O4

Compare to Other Gibson Furnaces:
#2  of 2 Gibson Furnaces
4 of 5 stars 1 review

  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied

best product icon  What are the 10 Best Furnaces?

Date created: 2013-03-28 Name: Lele
Location: jmzxKovBmYJyeAoLWen

Satisfaction Rating:

4 of 5 stars Somewhat Satisfied

How long did you have the heater on? It needs to be rnnniug for a few minutes before the blower will come on.There is a thermal switch that turns on the blower. It could be bad, or the blower motor could be bad. On your thermostat is there a switch for the fan that says auto and on ? If so, turn the switch to on, and see if the blower comes on. If so, the thermal switch is probably bad.

Find Local Contractors

1. I need a new:

2. My zip code is:

Other O4 Reviews

While there are few posts about the O4 series specifically, largely positive reviews regarding the Gibson furnaces can be found in online forums. It has been said that their “performance is similar enough [to more well-known brands] that you need to focus on the actual installation and system design.” Also, “very few problems” are reported and, according to at least one professional HVAC technician on hvac-talk.com, “You get a lot of bang for your buck with Nordyne products.”

GIBSON O4 Model Numbers

The O4 is available in different models which vary in efficiency and capacity.

Model Number AFUE BTUs per Hour
04HD-091A-12-F 80.5 98,000
04HD-140A-16-F 80 140,000
04HD-140A-16-FA 80 140,000

O4 Warranty

All oil furnaces must be professionally set-up and installed at which point a 5-year warranty on all parts of the Gibson O4 applies. There is a limited lifetime warranty on the heat exchanger.

Copyright 2002 - 2015 furnacecompare.com