The generator will not operate with out the CO sensor. To insure proper operation the CO sensor must be connected and functioning properly. It is not recommended that the sensor be removed or disconnected.
NorthStar Quiet Armor Commercial-Grade Portable Generator, Honda GX270 OHV Engine, 5500 Surge Watts, 4500 Rated Watts

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- Quiet Armor technology delivers up to 20% less noise as measured (in dBA) against leading commercial-grade portable generators*
- Honda GX270 OHV engine for reliable power
- GFCI outlets ensure jobsite safety
- Carbon monoxide detection and automatic shutdown ensure safe operation
- Rugged 1-3/8in. steel tube roll cage and flat-free tires for maximum strength and portability
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Description
Key Specs
Reviews
Q & A
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Product Summary
What's Included
- (1) NorthStar Quiet Armor Commercial-Grade Portable Generator with Honda GX270 OHV Engine,
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QUIETER OPERATION
Exclusive Quiet Armor™ technology ensures 20% LESS NOISE than leading commercial-grade portable generators
THE TRUTH BEHIND DECIBEL RATINGS
Not all generator brands use the same testing standards to determine decibel ratings, meaning advertised ratings are hard to compare from brand to brand. NorthStar sets the record straight.
HEAD-TO-HEAD TESTING
An independent sound laboratory put the new NorthStar commercial-grade generators with Quiet Armor™ technology to the test against the leading generator brands using identical testing methods. Test results revealed the NorthStar commercial-grade generator is significantly quieter than the competition.
BUILT STRONGER
Made to last with HEAVY-DUTY steel frames, HIGHEST-QUALITY components and backed by the BEST warranties on the market
BETTER EQUIPPED
Full panel of GFCI outlets provide ESSENTIAL jobsite SAFETY and CONVENIENCE
Features + Benefits

- Quiet Armor technology delivers up to 20% less noise as measured (in dBA) against leading commercial-grade portable generators*
- Honda GX270 OHV engine for reliable power
- GFCI outlets ensure jobsite safety
- Carbon monoxide detection and automatic shutdown ensure safe operation
- Rugged 1-3/8in. steel tube roll cage and flat-free tires for maximum strength and portability
Key Specs
| Attribute | Specification |
|---|---|
item# | 1654400 |
Brand | NorthStar |
Manufacturer's Warranty | 4 year limited warranty |
Ship Weight | 246.0 LB |
Surge Watts | 5,500 |
Rated Watts | 4,500 |
Fuel Type | Gasoline |
Voltage | 120/240 |
Max. Amps | 37.5 |
Engine Displacement | 270 cc |
Engine Brand | Honda |
Engine Model | GX270 |
Enclosure Material | Steel |
Start Type | Recoil |
Fuel Capacity | 8 Gal |
| Attribute | Specification |
|---|---|
Half-Load Run Time | 15.1 hr |
Number of Outlets | 7 |
Outlet Type | (6) 120v, 20a Gfci, (1) 120/240v, 30a Locking (only 20a Can Be Drawn) |
Battery Required | No |
Battery Included | No |
Auto Shutdown | Yes |
Overload Protection | Yes |
Low Oil Shutdown | Yes |
Hour Meter | No |
Hertz | 60 |
Engine Cooling | Air |
Built-in Inverter | No |
CARB Compliant | No |
Product Weight | 227.0000 lb |
Dimensions L x W x H (in.) | 41.0 x 32.0 x 29.0 in |
Reviews
Questions & Answers
Questions
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· 2 years ago
How to disconnect the co sensor
1 answer-
NorthstarExpert11· 2 years ago
Helpful?
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· 2 years ago
Is Generator head copper wound on all sizes?
1 answer-
NorthstarExpert7· 2 years ago
Yes, the generator has a 100% copper-wound head.
Helpful?
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· 3 years ago
what is the db rating ?
1 answer-
NorthstarExpert12· 2 years ago
Independent third-party testing of NorthStar generators was conducted by a world-renown NIST-accredited sound laboratory under NVLAP. Their testing revealed NorthStar generators with Quiet Armor™ technology produce markedly less noise measured (in dBA) against leading competitors.
Please view the product images for additional information on NorthStar decibel ratings specific to the unit you are inquiring about along with information pertaining to Quiet Armor™ technology. This NorthStar line truly earned its reputation as the ultimate commercial-grade generators by redefining the industry with Quiet Armor™ technology, superior durability, and cutting-edge features designed to ensure they are easy to use.
Helpful?
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· 3 years ago
What is the rated Total Harmonic Distortion? I would like to use this for home back up power/electronics.
1 answer-
NorthstarExpert11· 3 years ago
The Northstar generator will have less than a 5% harmonic distortion at a full load. This is the same as the electricity provided from the utility company.
Helpful?
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Warranty
Manufacturer's Warranty
4 year limited warranty
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Repair Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
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Item # 1654400
$999.99Reg $2299.99Save $1300.00Order today to get this price.
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Item # 48974
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- $779.00Reg $849.00Save $70.00
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Specifications
5,500
5,500
8,125
10,000
4,500
5,000
6,500
9,000
Gasoline
Diesel
Gasoline
Gasoline
120/240
120/240
120/240
120/240
37.5
-
-
-
270 cc
435 cc
389 cc
688 cc
Honda
Yanmar
Generac
Honda
GX270
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-
-
Steel
-
-
-
Recoil
Electric
Recoil
Electric and Recoil
8 Gal
12 Gal
6.9 Gal
8.1 Gal
15.1 hr
-
5 hr
-
7
-
5
-
(6) 120v, 20a Gfci, (1) 120/240v, 30a Locking (only 20a Can Be Drawn)
-
(4) 120v 20a 5-20r Gfci, (1) 120/240v 30a L14-30r
-
No
Yes
No
Yes
No
No
-
Yes
Yes
-
-
-
Yes
-
-
-
Yes
Yes
Yes
Yes
No
-
-
-
60
-
-
-
Air
-
-
-
No
-
-
-
No
-
No
Yes
227.0000 lb
lb
176.5000 lb
403.0000 lb
41.0 x 32.0 x 29.0 in
33.0 x 22.5 x 25.0 in
27.25 x 27.0 x in
56.0 x 26.75 x 35.12 in
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-
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72 dB
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NorthStar Quiet Armor Commercial-Grade Portable Generator, Honda GX270 OHV Engine, 5500 Surge Watts, 4500 Rated Watts
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