How efficient is the Slant/Fin Sentry?

The Slant/Fin Sentry operates at 84% AFUE (Annual Fuel Utilization Efficiency), meaning 84% of the fuel it consumes is converted directly into heat for your home. This provides reliable heating at a solid efficiency level for cast iron construction.

How much does the Slant/Fin Sentry cost to install?

The Slant/Fin Sentry typically costs $3,200 - $5,500 for a complete installation in Nassau County, NY. This includes the boiler unit, professional installation by NATE-certified technicians, permits, and a standard warranty. Actual costs may vary based on your home's specific requirements, piping condition, and any necessary modifications.

Is the Slant/Fin Sentry worth it?

With 84% AFUE efficiency, you can expect to save approximately $67 annually compared to an 80% efficient boiler. Key features like Cast iron construction and Compact design make it a compelling choice. It's particularly well-suited for homes with slant/fin baseboard systems.

What is the warranty on the Slant/Fin Sentry?

Slant/Fin provides a 3 years parts warranty and Lifetime on the heat exchanger. For the best warranty protection, we recommend registering your boiler within 60 days of installation. Our installations include a workmanship guarantee on top of the manufacturer warranty.

How long does the Slant/Fin Sentry last?

With proper maintenance, the Slant/Fin Sentry should last 15-25 years or more. Premium-tier boilers like this one often exceed these expectations due to higher-quality components. We recommend annual tune-ups to maximize lifespan and maintain peak efficiency.

Does the Slant/Fin Sentry qualify for PSEG Long Island rebates?

The Slant/Fin Sentry at 84% AFUE doesn't currently qualify for PSEG efficiency rebates, which typically require 90%+ AFUE. However, its proven reliability and lower upfront cost may be the right choice for your home.

Back to Slant/Fin Boilers

Premium

Slant/Fin Sentry

Model Number: SEN

Cast iron hot water boiler optimized for Slant/Fin baseboard systems.

84% AFUE

Hot Water Boiler

42k - 126k BTU

Get Free Quote (516) 345-3911

Technical Specifications

Efficiency (AFUE)84%

Boiler Typehot water

BTU Output Range42k - 126k BTU

PSEG Rebate EligibleNo

Fuel TypeNatural Gas

Installed Price$3,200 - $5,500

*Prices include equipment, installation, and standard warranty. Actual cost may vary.

Estimated Annual Savings

Compared to an 80% efficient boiler

$67

per year

$1340

over 20 years

Get Your Custom Quote

Ideal For

Homes with Slant/Fin baseboard systems

Expert Review: Slant/Fin Sentry

The Slant/Fin Sentry represents a pinnacle of cast iron boiler engineering, delivering 84% AFUE efficiency with exceptional durability. This premium hot water boiler is engineered for Long Island homes requiring dependable performance through harsh winter conditions.

Our Nassau County installation teams appreciate the Sentry's robust cast iron sections, which provide superior heat retention and resist the thermal stress common in stop-and-go cycling. The boiler's design accommodates both natural gas and propane configurations, offering flexibility for homes without natural gas access.

For baseboard heating systems common in older Hicksville and Westbury homes, the Sentry provides consistent water temperatures and quiet operation. The atmospheric burner design ensures reliable ignition even in cold basement environments typical of Long Island construction.

Local supply houses like F.W. Webb in Hicksville maintain parts inventory, ensuring same-day repairs when needed. The Sentry qualifies for extended warranty coverage when installed by certified contractors.

Installation note: Ideal for existing hot water baseboard systems where cast iron reliability takes priority over condensing technology. Straightforward venting requirements keep installation costs reasonable.