- Home Page /
- Tools & Home Improvement /
- Building Supplies /
- HVAC /
- HVAC Controls /
- Supplying Demand Q105 3120A357 Furnace Heat P...
Supplying Demand Q105 3120A357 Furnace Heat Pump Sequencer 1DPST 1SPST 24 Volt On 1-110 Off 1-110
87% of respondents would recommend this to a friend
LAK 853423
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
QTY:
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Supplying Demand is lowering the price of repair, reducing waste by utilizing reusable or recyclable packaging, and empowering customers through educational materials.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
What Stands Out
Product Details
- Compatible with various part numbers including 525-37327-000, ZC24A34-5, IES24A34-5, 24A35-5, 24A34-54, 51172-32, 33232, and 33832
- Designed to control heating elements and blower motors in electric, gas, or oil heat systems
- Switches on at 1-110 seconds and off at 1-110 seconds with contacts M1-M2 turning on first and off last
- Operates on a 24 volt control circuit with a five-second delay between subsequent stages, unless they function together
- UL and CSA approved for use in electric furnaces, heat pumps, gas furnaces, and oil furnaces
- Compatible with various major brands, but fitment should be verified with the specific application
| Connector Type | Screw |
| Contact Type | Normally Open |
| Current Rating | 30 A |
| Mounting Type | DIN Rail Mount |
| Operation Mode | Electric |
| Wattage | 720 watts |
| Coil Voltage | 24 volts |
| Contact Current Rating | 30 A |
| Maximum Switching Current | 30 A |
| Maximum Switching Voltage | 24 volts |
| Minimum Switching Voltage | 24 volts |
| Operating Time | 5 seconds |
| Specification Met | CSA, UL |
| Contact Material | Silver Copper |
| Brand Name | Supplying Demand |
| UPC | 812116032574 |
| Number of Packs | 1 |
| Unit Count | 1 Count |
| Number of Items | 1 |
| Included Components | Sequencer |
| Manufacturer | Supplying Demand |
| Model | SDNS105 |
| Part Number | SDNS105 |
| Item Weight | 1 lbs (450 grams) |
What's in the box
Sequencer
Who Should Buy?
-
HVAC Technicians
Ideal for technicians needing reliable sequencers for furnace and heat pump installations and repairs.
-
Homeowners
Beneficial for homeowners aiming to maintain efficient heating systems in their residences.
-
DIY Enthusiasts
Perfect for DIYers looking to upgrade or troubleshoot heating systems without professional assistance.
-
Non-Technical Users
Not suitable for users uncomfortable with electrical components or HVAC systems installation.
Product Description
Customer Questions & Answers
-
Question:
What is the function of the Supplying Demand Q105 3120A357 Furnace Heat Pump Sequencer?
Answer: The Supplying Demand Q105 3120A357 Furnace Heat Pump Sequencer is designed to control the operation of your heating system by managing the heating and cooling cycles. It operates on a 24 Volt power supply and features a 1DPST and 1SPST configuration, allowing it to switch on heating elements or activate cooling modes based on temperature settings. This ensures efficient climate control in your home, helping to maintain comfortable temperatures while optimizing energy consumption. -
Question:
How does the 1DPST and 1SPST configuration work?
Answer: The 1DPST (Single Pole Single Throw) and 1SPST (Single Pole Single Throw) configuration allows the sequencer to switch electrical current on and off efficiently. In practical terms, the 1DPST is used for controlling the heating circuit, while the 1SPST manages the cooling circuit. This setup ensures that your furnace and heat pump work harmoniously, allowing for seamless transitions between heating and cooling as required, keeping your home comfortable throughout the year. -
Question:
What are the voltage requirements for the sequencer?
Answer: The Supplying Demand Q105 3120A357 is designed to operate at 24 Volts. This voltage requirement ensures compatibility with standard HVAC systems, which typically utilize a low voltage setup for safety and efficiency. When installing this sequencer, ensure that your system also operates on 24 Volts to prevent any electrical issues and to ensure optimal performance of your heating and cooling system. -
Question:
Can I use this sequencer in both heating and cooling systems?
Answer: Yes, the Supplying Demand Q105 3120A357 is compatible with both heating and cooling systems. Its dual functionality allows it to switch between heating and cooling as required, making it a versatile choice for year-round climate control. Whether you are using a heat pump for winter heating or cooling in the summer, this sequencer will manage the system effectively, providing reliable temperature regulation in your home. -
Question:
What should I check before installing the sequencer?
Answer: Before installing the Supplying Demand Q105 3120A357, it's crucial to check the compatibility of your HVAC system with the 24 Volt operation. Additionally, verify the existing wiring configuration to ensure that it matches the sequencer that you are installing. Measuring the resistance of the current system can also help in diagnosing any underlying issues that need attention prior to installation, ensuring a smoother integration into your heating and cooling setup. -
Question:
Is professional installation recommended for this sequencer?
Answer: While the Supplying Demand Q105 3120A357 can be installed by individuals with basic electrical skills, professional installation is often recommended. A qualified technician will ensure that the installation adheres to local codes and that the sequencer is integrated correctly into your heating and cooling system. This can prevent future issues and enhance the efficiency of your HVAC system, making it a worthwhile consideration for peace of mind. -
Question:
What troubleshooting steps can I take if the sequencer is not working?
Answer: If the Supplying Demand Q105 3120A357 is not operational, first check the power supply and ensure it provides the required 24 Volts. Inspect all wiring connections for any loose or damaged wires that may interrupt the electrical circuit. Additionally, verify that the thermostat is set correctly and that there are no blockages in the heating or cooling systems. If issues persist, consulting a professional can help diagnose more complex problems that may require expert intervention. -
Question:
Can this sequencer help improve energy efficiency?
Answer: Yes, by regulating the heating and cooling cycles efficiently, the Supplying Demand Q105 3120A357 can contribute to enhancing your home's energy efficiency. It optimizes the operation of your heating system, reducing unnecessary energy expenditure. This makes it an excellent choice for homeowners looking to achieve a more sustainable energy usage profile while maintaining optimum comfort levels in their living spaces. -
Question:
Where can I buy the Supplying Demand Q105 3120A357 Furnace Heat Pump Sequencer?
Answer: You can purchase the Supplying Demand Q105 3120A357 Furnace Heat Pump Sequencer from Ubuy in Laos. Ubuy offers reliable service and a wide selection of HVAC components, allowing you to find the right part for your heating and cooling needs with ease. -
Question:
What are the dimensions of the sequencer?
Answer: The dimensions of the Supplying Demand Q105 3120A357 are designed to fit standard electrical panels used in HVAC applications. While exact measurements can vary slightly, it typically features a compact design that easily integrates into existing systems without requiring significant modifications. This makes it convenient for replacement and upgrades in your heating and cooling setup, ensuring that you can improve your system without major overhaul.
Supplying Demand HVAC Controls Editorial Review
Customer Reviews & Ratings
-
5 Star
73%
-
4 Star
17%
-
3 Star
5%
-
2 Star
1%
-
1 Star
4%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
“Great products and very good service: very easy and very fast international delivery.”
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
“Easy to find and order what you want on the website. Delivery is quick to the UK”
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
LAK 853423
Order now and get it around Friday, September 25
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Features & Benefits
- Private-label manufacturer specializing in appliance and HVAC parts
- Dedicated to delivering high-quality components
- Lowering the price of repair
- Utilizing reusable or recyclable packaging
- Empowering customers through educational materials
- Practical repairs at a reasonable price
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.

