Buderus is a German-engineered boiler brand now part of Bosch Thermotechnology. Known for premium build quality and efficient condensing technology, Buderus boilers are installed in thousands of Nassau and Suffolk County homes. We specialize in Buderus replacement and repair, including the GB142 heat exchanger issues that bring many homeowners to us.
Buderus has been manufacturing heating equipment since 1731, making it one of the oldest boiler brands in the world. Their German engineering heritage shows in the build quality of their products, which are designed for durability and high efficiency. Now operating under Bosch Thermotechnology, Buderus continues to offer premium residential and commercial boilers.
On Long Island, Buderus became especially popular in the early 2000s, and the GB142 wall-hung condensing boiler quickly became a go-to recommendation for hot water baseboard and radiant floor heating upgrades. The Logano oil-fired series also earned a loyal following among homeowners in oil-heated homes across the island. We have installed and serviced hundreds of Buderus units over the past two decades.
Today, the Buderus residential lineup is largely integrated with the Bosch Greenstar brand, but Buderus oil boilers and the GB162 series remain available under the Buderus name. For homeowners looking to replace an aging Buderus with a modern equivalent, we can recommend the best option from the combined Buderus and Bosch lineup, or from other premium brands like Weil-McLain or Navien. View our full brand comparison to explore all 11 manufacturers we carry.
Nearly 300 years of heating expertise. Buderus boilers are built with precision manufacturing standards that prioritize longevity and efficiency.
Up to 95% AFUE on the GB142 series. All condensing models qualify for rebates and tax credits through ENERGY STAR certification.
One of the few premium brands with both high-efficiency gas and oil-fired boiler lines. GL-180M cast iron on oil models for corrosion resistance.
We specialize in diagnosing and resolving the known heat exchanger and Logamatic control issues on GB142 units. Honest assessment on repair vs. replace.
As a Buderus installer, we also carry the full Bosch Greenstar residential lineup, giving you more options for a modern replacement.
Advanced EMS control system with outdoor reset and multi-zone management. Precise temperature regulation for consistent comfort.
The average Buderus or Bosch Greenstar boiler installation on Long Island falls between $8,500 and $11,000 for a typical residential replacement. Buderus and Bosch units tend to sit slightly higher in cost than some domestic brands, reflecting the German engineering and premium components.
If you are replacing a GB142 and staying within the Buderus or Bosch family, the piping and venting connections are often compatible, which can reduce labor time. If you are switching to a different brand entirely, there may be additional piping work depending on the configuration of the new unit.
All condensing models (GB142, GB162, Bosch Greenstar) qualify for National Grid rebates and federal tax credits of up to $600. We also offer flexible financing through Wisetack. For a full breakdown by system type, visit our cost guide.
If you have a Buderus GB142, there is a good chance you have already dealt with, or will deal with, heat exchanger problems. This is the single most common reason homeowners call us about their Buderus boiler. The GB142 heat exchanger replacement typically costs $2,500 to $4,000 including parts and labor, and when that bill approaches 50% of a new boiler installation, the math often favors replacement.
We give you an honest assessment. If your GB142 is under 10 years old and has not had previous heat exchanger work, a repair may still be the right call. But if the unit is older, has had recurring issues with the Logamatic controls, or is showing signs of multiple component failures, a new high-efficiency boiler from Bosch Greenstar, Navien, or Weil-McLain will give you better reliability going forward.
For homeowners who love the quality and performance of Buderus, the GB162 series and the Bosch Greenstar wall-hung condensing boilers carry forward the same engineering lineage with improved reliability. We can help you evaluate your options during a free in-home estimate.
From the first phone call to your first warm morning, here is what to expect when you replace your boiler with a Buderus or Bosch Greenstar unit.
We evaluate your current Buderus system, diagnose any existing issues, and recommend the best replacement. We explain all rebates and financing options. No cost, no obligation.
Once you approve the estimate, we schedule at a time that works for you. We stock popular models and can typically schedule within days. Emergency service is also available.
Our crew removes the old Buderus, installs the new unit, connects all piping and venting, and tests the system. Most residential installations are completed in one day. We clean up and haul away old equipment.
We register your warranty, submit rebate paperwork, program the controls, and provide tax credit documentation. We are here for any questions after the job.
Current and commonly replaced Buderus boiler models we work with on Long Island. Includes the Bosch Greenstar series as the residential successor.
| Model | Type | AFUE | Sizes (MBH) | Application |
|---|---|---|---|---|
| GB142 | Condensing | 95% | 83, 113, 142 | Wall-hung modulating condensing gas boiler. Aluminum heat exchanger. Logamatic control. ENERGY STAR certified. Widely installed but known for heat exchanger issues on older units. |
| GB162 | Condensing | 93-94% | 80, 100 | Wall-hung condensing with patented ALU-Plus heat exchanger. 5:1 turndown ratio. Cascade up to 4 units. Ideal for residential and light commercial. Logamatic EMS control. |
| Bosch Greenstar | Condensing | 95% | 57, 79, 100, 131, 151 | The residential successor to Buderus gas boilers. Wall-hung. Heatronic III control. PVC venting. Built-in pump. Available in heat-only and combi configurations. ENERGY STAR certified. |
| Bosch Greenstar Combi | Combi | 95% | 100, 131, 151 | Space heating and domestic hot water from one wall-hung unit. Heatronic III control. Ideal for homes with 1 to 2 bathrooms looking to eliminate a separate water heater. |
| Model | Type | AFUE | Sizes (MBH) | Application |
|---|---|---|---|---|
| G115WS Logano | Oil Cast Iron | 87% | 95, 118, 142, 167 | Floor-standing GL-180M cast iron. Full 3-inch insulation. Full-swing burner door for easy service. Chimney or direct vent. ENERGY STAR certified. Burner sold separately. |
| G215 Logano | Oil Cast Iron | 87% | 149, 185, 220, 256 | Larger output GL-180M cast iron with Thermostream technology. Unrestricted return water temperature eliminates thermal shock. Ideal for larger oil-heated homes. |
Long Island homeowners share their experience with Buderus boiler replacements by our team.
"Our GB142 heat exchanger failed and another company quoted us $3,500 just for that repair. Domino's came out and was honest that the boiler was 14 years old and had other issues starting. They replaced it with a Bosch Greenstar and the install was seamless. Same wall location, same venting, done in one day."
"We have a Buderus G115 oil boiler that was 22 years old and starting to have issues. Domino's recommended converting to gas with a Navien. They handled the gas line, removed the oil tank from the basement, and did the whole conversion in about a week. Incredible difference in our energy costs."
"Had a Buderus GB142 that was only 8 years old with a failed heat exchanger. Domino's actually recommended the repair instead of a full replacement because the rest of the boiler was in good shape. Very honest company. They did the heat exchanger swap and it has been running perfectly since."
We install and service Buderus and Bosch Greenstar boilers across every town in Nassau County and Suffolk County. Based in Melville for fast response.
Every town from the Queens border to the Suffolk line. Garden City, Levittown, Massapequa, Hempstead, and 60+ more communities.
Nassau County DetailsOur home base. Huntington to Montauk, including the North Fork, South Fork, and everything in between.
Suffolk County DetailsCommon questions Long Island homeowners ask about Buderus boiler replacement and service.
Get a free in-home estimate. We will evaluate your current Buderus system, recommend the best replacement option, and provide a complete quote with all available rebates factored in.