Viessmann CU3A-94 Vitocrossal 300 CU3A 94,000 BTU Gas Condensing Boiler
Viessmann CU3A-94 Vitocrossal 300 CU3A 94,000 BTU Gas Condensing Boiler
Hurry up, only 2 items left in stock.
Project Pricing
Get Accurate Project Pricing for Your Plumbing Needs
Project pricing at Plumbing-Deals is tailored to meet your specific project. The size of a plumbing job that qualifies as a project can vary, generally its larger than a single bathroom or kitchen remodel. By submitting the form or calling, you're taking the first step towards receiving a customized quote that considers your project's scope, timeline, and budget, ensuring a seamless and cost-effective solution for your plumbing parts and supplies.
Ready to get started? Call us at 888-682-5956, and let's make your plumbing project a success!
Couldn't load pickup availability
Upgrade to the Viessmann CU3A-94 Vitocrossal 300 Gas Condensing Boiler
The Viessmann CU3A-94 Vitocrossal 300 is a high-efficiency, floor-standing gas condensing boiler designed for residential and light commercial heating systems that demand consistent performance, low operating costs, and long-term reliability.
Built around Viessmann’s proven Inox-Crossal stainless steel heat exchanger and MatriX dome gas burner technology, this boiler delivers exceptional fuel efficiency, quiet operation, and stable heating output for both retrofit and new construction applications.
With a maximum input of 94,000 BTU and 95% AFUE efficiency, the CU3A-94 is ideal for high-temperature systems such as cast iron radiators, baseboard heating loops, and multi-zone hydronic systems.
Key Features
Exceptional Efficiency with Intelligent Technology
Achieve up to 98% efficiency with the vertical stainless steel Inox-Crossal heat exchanger, designed for optimal heat transfer. Its smooth surface promotes a self-cleaning effect, pushing efficiency even further while reducing maintenance needs. Paired with the MatriX dome gas burner, the boiler ensures ultra-low emissions and high-performance combustion, even with fluctuating gas quality.
Flexible and Reliable for All Homes
Whether your home relies on high-mass cast iron radiators or modern high-temperature fin tube radiators, the Viessmann CU3A seamlessly integrates with all setups. Its high-output capacity and compact floor-standing design make it a versatile choice for virtually any heating demand, including multi-zone systems and significant hot water requirements.
Quiet Comfort and Durability
Operating quieter than most household refrigerators, the CU3A ensures absolute comfort without distracting noise. Its durable stainless steel construction and limited lifetime warranty on residential applications provide peace of mind, knowing your investment will stand the test of time.
Product Details
- High-efficiency residential/light commercial gas condensing boiler
- Maximum input: 94,000 BTU
- AFUE efficiency: up to 95%
- Floor-standing installation design
- Stainless steel Inox-Crossal heat exchanger
- MatriX dome modulating burner system
- 5:1 turndown ratio for efficient part-load operation
- Suitable for hydronic heating systems (radiators, baseboard, multi-zone systems)
- Compact footprint for retrofit mechanical rooms
- Designed for consistent heating performance with reduced cycling
- High-altitude operation capability (up to approx. 10,000 ft)
Viessmann is a global leader in high-efficiency heating systems, known for durable engineering, advanced condensing technology, and long-lasting hydronic boiler solutions designed for residential and commercial applications.
Additional Information
- Model: CU3A-94
- Brand: Viessmann
- Series: Vitocrossal 300 CU3A
- Warranty: Limited lifetime warranty in residential applications
Viessmann CU3A-94 FAQ
What is the Viessmann CU3A-94 used for?
The CU3A-94 is a high-efficiency condensing boiler used for residential and light commercial hydronic heating systems, including radiators, baseboards, and multi-zone heating setups.
Is the CU3A-94 good for replacing older cast iron boilers?
Yes. The CU3A-94 is specifically designed for retrofit applications and performs well in high-temperature systems like cast iron radiators.
How efficient is the Viessmann CU3A-94 boiler?
It operates at up to 95% AFUE efficiency, depending on system configuration and operating conditions.
Does the CU3A-94 require special piping?
In many applications, its high water content design reduces or eliminates the need for complex primary/secondary piping.
What makes this boiler a condensing model?
It captures additional heat from flue gases using a stainless steel heat exchanger, increasing efficiency compared to non-condensing boilers.
| Weight | 269.0 lb |
|---|---|
| Collection | Vitocrossal 300 |
| Fuel Type | Natural Gas (NG) or Propane (LPG) |
| Height | 67.00 in. |
| Horse Power | 1/3 |
| Length | 27.00 in. |
| Width | 26.00 in. |
| Inventory Number | VIESCU3A94 |
| MPN | CU3A-94 |
| BTU | 94,000 BTU |
