ROBERTSHAW 100-00812-27 Invensys

( Brand: Robertshaw ), ( Manufacturer Part Number: 100-00812-27 )

Review ROBERTSHAW Invensys 1000081227 Used

The **Robertshaw 100-00812-27 (Invensys 1000081227)** is a high-performance, digitally controlled **gas-fired atmospheric condensing boiler** designed to deliver exceptional efficiency, reliability, and versatility for residential and light commercial heating applications. Engineered by Robertshaw, a leader in advanced HVAC controls and boiler technology, this unit integrates seamlessly with modern smart home systems while maintaining robust mechanical performance. Built with a **modulating gas valve** and a **digital combustion control system**, the boiler ensures precise fuel delivery, optimizing combustion efficiency and reducing emissions to meet or exceed stringent environmental regulations. Its **condensing technology** maximizes heat recovery by extracting latent heat from exhaust gases, converting it into usable energy for water heating, which significantly enhances overall system efficiency typically achieving an **AFUE rating of up to 95% or higher**, depending on configuration. The boiler features a **stainless steel heat exchanger**, resistant to corrosion and scaling, ensuring longevity and consistent performance even in demanding water conditions. Its **atmospheric venting system** eliminates the need for a powered draft inducer, simplifying installation and reducing operational noise while maintaining safety through a sealed combustion chamber. The unit is equipped with a **user-friendly digital interface**, allowing for intuitive programming of temperature setpoints, scheduling, and diagnostic troubleshooting directly from the control panel. Additionally, it supports **modbus communication protocols**, enabling integration with building automation systems, smart thermostats, or other third-party controls for enhanced energy management and remote monitoring capabilities. Ideal for applications requiring both space heating and domestic hot water, the **100-00812-27** is engineered for quiet operation, with sound levels kept to a minimum through optimized burner design and vibration-dampening components. Its compact yet robust construction makes it suitable for retrofits as well as new installations, accommodating a wide range of fuel types, including natural gas, propane, and biogas, with minimal adjustments. Built to endure harsh operating conditions, the boiler incorporates **high-quality seals, reinforced mounting brackets, and a durable outer casing**, ensuring durability and resistance to wear over extended service life. Whether deployed in a single-family home, a small apartment complex, or a light commercial setting, the **Robertshaw 100-00812-27** delivers a blend of cutting-edge technology, energy efficiency, and dependable performance, making it a standout choice for modern heating solutions.

**Analysis of the Robertshaw 100-00812-27 (Invensys 1000081227) Unit**

This part is a **refrigeration control board** commonly used in commercial refrigeration systems, such as reach-in refrigerators, freezers, and display cases. Below is a detailed breakdown of its pros, cons, and a final recommendation.

---

### **Pros**

1. **Compatibility and Reliability**

The Robertshaw 100-00812-27 is a well-established model designed for use in commercial refrigeration systems, particularly those manufactured by Invensys (now part of Emerson Climate Technologies). It is widely compatible with older and newer systems that rely on this control board, reducing the risk of compatibility issues.

2. **Proven Performance**

Robertshaw has a long history in the refrigeration industry, and this model is known for its durability and consistent operation. It handles temperature control, defrost cycles, and system diagnostics effectively, which is critical for maintaining food safety and energy efficiency in commercial settings.

3. **Ease of Installation and Replacement**

This control board is a direct replacement for many older Invensys systems, meaning it can often be installed without extensive modifications to wiring or system configuration. This simplifies repairs and reduces downtime for businesses.

4. **Availability of Parts and Support**

As a legacy model, parts for this control board are still relatively accessible through distributors, salvage yards, and online marketplaces. Additionally, technicians familiar with Robertshaw/Invensys systems are likely to have experience troubleshooting or replacing it.

5. **Cost-Effective for Budget Repairs**

Compared to newer, more advanced control boards, this model is often more affordable. For businesses operating on tight budgets or those with older systems, purchasing this part can be a cost-effective way to restore functionality without investing in a complete system upgrade.

6. **Energy Efficiency (Relative to Older Systems)**

While not state-of-the-art, this control board is more efficient than some of the earliest refrigeration control systems. It helps optimize compressor run times and defrost cycles, which can reduce energy consumption compared to poorly managed systems.

---

### **Cons**

1. **Age and Obsolescence**

This model is several decades old, and while it may still function, it lacks modern features such as digital diagnostics, remote monitoring, or compatibility with smart refrigeration systems. This can limit its usefulness in newer installations or systems that require advanced controls.

2. **Limited Diagnostic Capabilities**

The control board relies on basic mechanical and electrical signals rather than digital feedback. Diagnosing issues may require more time and expertise, as troubleshooting often involves manual checks of relays, sensors, and wiring. Modern systems provide error codes and real-time data, which can speed up repairs.

3. **Potential for Wear and Failure**

Older components are more prone to failure due to aging materials, such as corroded contacts, degraded wiring, or failing capacitors. While the control board itself may work, associated components (e.g., sensors, relays) could also need replacement, increasing the overall repair cost.

4. **Compatibility with Modern Systems**

If the refrigeration system has been upgraded with newer components (e.g., variable-speed compressors, advanced defrost systems, or digital interfaces), this control board may not integrate seamlessly. It could require additional adapters or modifications, which may not be worth the effort for some businesses.

5. **Limited Longevity**

While it may last for years, the control board s lifespan is finite. If the system is still in active use, investing in a newer control board could extend the system s operational life without the risk of sudden failure. Replacing it now might save money in the long run by avoiding a complete system failure.

6. **Regulatory and Energy Compliance**

Newer refrigeration systems often meet stricter energy efficiency standards (e.g., DOE regulations) and may qualify for rebates or incentives. A system with this control board may not meet these standards, limiting access to such benefits.

---

### **Conclusion**

The Robertshaw 100-00812-27 (Invensys 1000081227) is a **functional and reliable** choice for repairing older commercial refrigeration systems, particularly if the system is already compatible and the board is in good condition. It offers a **cost-effective solution** for businesses that need a quick fix without upgrading their entire system. However, its **age and lack of modern features** make it less ideal for long-term use, especially in systems that require advanced controls or energy efficiency.

For businesses with **older systems that are otherwise functional**, purchasing this part is a reasonable decision if the system is nearing the end of its useful life or if a full upgrade is not feasible. For **newer or high-performance systems**, investing in a modern control board would be more beneficial in the long run, offering better reliability, diagnostics, and energy savings.

---

### **Recommendation**

- You have an older commercial refrigeration system that is otherwise in good working order.

- The system lacks advanced features, and you are not planning to upgrade it soon.

- You need a **quick, budget-friendly replacement** to avoid downtime.

- The control board is the only failing component, and associated parts (e.g., sensors, compressors) are still functional.

- The refrigeration system is **recently installed or upgraded**, and you want modern controls for better efficiency and diagnostics.

- You are experiencing **frequent failures** in other components (e.g., compressors, fans), suggesting the system may need a full overhaul.

- You are looking to **extend the system s lifespan significantly**, in which case a newer control board (e.g., from Emerson or Honeywell) would be more future-proof.

- The system **does not meet current energy efficiency standards**, and you want to qualify for rebates or reduce operational costs.

If the system is **critical to your operations** and you cannot afford downtime, proceed with the purchase. However, **budget for potential associated repairs** (e.g., replacing worn-out sensors or wiring). If the system is **not mission-critical**, consider whether upgrading to a newer control board would be more cost-effective in the long term. Always test the board for functionality before installation to ensure it is not already failing.

Details:

Call to use a shipping service other than the ones listed. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. Sells new and surplus product develops channels to purchase such. All products are guaranteed to be working but may show signs of use if purchasing a used product.

part #: 1000081227 prices

• $25.95-$100.00

specifications hvaapa:

• brand: Robertshaw
• mpn: 100-00812-27

general hvaapa:

• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Controls Circuit Boards
• condition: Used

offer hvaapa:

• quantity: 1
• started: April 3, 2026
• options: Ship-to-home
• availability: In Stock
• sold: 0

returns hvaapa:

• time: 30 Days
• method: Money back
• policy: Returns Accepted
• paid by: Buyer

payments hvaapa:

• wallet: Paypal
• credit card: Diners-club
• other

seller hvaapa:

• # reviews: 197556
• rating: 99.6%
• city: 1 Millennium Dr, Willingboro, NJ 08046

shipping hvaapa:

• class: Standard
• transit: 30-35 Days
• cost: $12.90
• service: Standard
• type: Fixed

Robertshaw 100-00812-27 Is Similar To:

• 100-821-02 Robertshaw Ignition Control Used (43% similar) I have 2 items for sale, both of them you can see on the images. This part was removed from a working furnace. This is Robertshaw ignition control used part. Excellent cosmetic condition...(February 16th, 2018)
• Fss080360000 Invensys Robertshaw Mercury Flame Sensor (29.1% similar) Due to the hazards of mercury, this part is no longer produced. And once current stock has been sold 1000S of fireplaces will not be usable if this part fails. Gas fireplaces made by majestic instar-flame, empress, heat'glow, hunter, napoleon, hvac, Clare and others. Brand new part 48 cap tube ...(December 17th, 2016)
• 4020-001 Safety Valve Robertshaw Gas Fmda Invensys Ships Same Day Of Purchase (39.4% similar) Ships on the same day of the purchase. I ship worldwide. 95 to all 50 states. Bin to be installed by a trained service person. I have over 1600 items listed. Brand new invensys Robertshaw gas safety valve FDA not inlet and outlet, 1/4 pilot tubing inlet outlet, 24 capillary...(September 5th, 2016)
• 4020-003 Safety Valve Robertshaw Gas Fmea Invensys Ships Same Day Of Purchase (39.4% similar) Bin to be installed by a trained service person. 95 to all 50 states. I ship worldwide. I have over 1600 items listed. Ships on the same day of the purchase. Brand new invensys Robertshaw gas safety valve FDA...(September 13th, 2016)
• Lennox Sp-745 Robertshaw Ignition Control Board 100-00826-01 Sp 745 Used Free Shipping (41.2% similar) Ready to use...(October 22nd, 2023)
• Robertshaw Msca-500 Lot Of 30 Hvac Robert Shaw Circuit Board Used Parts Repair Not Tested (31.7% similar) Not tested selling as is for parts or repair - working, lot of 30 boards, I will not be shipped with anti static bubble supplies. See scans for condition and model numbers, type. All 30 boards are about the same as 10 in pictures, model's and condition...(February 15th, 2024)
• Robertshaw Msca-140 Invensys Msca140 Used Tested Cleaned (59.3% similar) Call to use a shipping service other than the ones listed. Sells new and surplus product develops channels to purchase such. All products are guaranteed to be working but may show signs of use. Packaging and handling: items are safely eds packaged in custom shipping cartons for protection...(August 19th, 2024)
• Robertshaw 100-00795-01 Control Board Invensys 1000079501 Free Shipping (59.5% similar) Works as it should...(September 4th, 2024)
• Robertshaw 100-00831-06 Uni-line 780-745 Intermittent Pilot Ignition Control Used (49.6% similar) You can ship by your FedEx account or using label. No less, no more. Whats included. Return exchange. Caused by unclear. Robertshaw uni-line 780-745 intermittent pilot ignition control / used. Shipping handling...(September 14th, 2024)
• Rheem Ruud Robertshaw 62-22578-01 Hs780 34pl-308a Ignition Control Board Module Used (35.8% similar) You are buying a used Rhee Robertshaw 62-22578-01 HS780 34PL-308A furnace ignition control board module. The furnace board is a working pull and will come as pictured...(September 28th, 2024)