
33243 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $8.00 | Condition is New, NEW MARS 33243/27P95 ELECTRIC HEAT SEQUENCER, shipping cost = $6.00 | 99.8% |
![]() | $15.00 | Condition is New, Mars 33243 24V 1-60on 1-45off Time Delay Relay Control, FREE SHIPPING | 98.8% |
![]() | $15.49 | Condition is New, Mars 33243 24V 1-60on 1-45off Time Delay Relay Control, FREE SHIPPING | 99.6% |
![]() | $15.95 | Condition is New, Mars Lennox 27P95 33243 Time Delay Relay On 1-60 Sec Off 1-45 NOS, FREE SHIPPING | 98.8% |
![]() | $17.49 | Condition is New, Brand New MARS TIME DELAY RELAY 33243, FREE SHIPPING | 100.0% |
![]() | $17.95 | Condition is New, NEW! MARS TIME DELAY RELAY 33243 , FREE SHIPPING | 100.0% |
![]() | $18.00 | Condition is New, Mars Lennox 27P95 33243 Time Delay Relay On 1-60 Sec Off 1-45 NOS, FREE SHIPPING | 100.0% |
![]() | $15.79 | Condition is New, MARS 33243 Electric Heat Sequencer Furnace On 1-60 Off 1-45, shipping cost = $4.99 | ![]() |
![]() | $15.00 | Condition is New, Mars 33243 Electric Heat Sequencer 24V Corded Electric HVAC, shipping cost = $5.97 | 100.0% |
![]() | $21.49 | Condition is New, MARS 33243 Electric Heat Sequencer Furnace On 1-60 Off 1-45, FREE SHIPPING | 100.0% |
![]() | $24.99 | Condition is New, Mars Lennox 33243 24V Time Delay Relay On 1-60 Sec Off 1-45, FREE SHIPPING | 100.0% |
![]() | $34.98 | Condition is New, 685744-33243 Mars Thermal Time Delay Relay 24V - Next Day Option - New, FREE SHIPPING | ![]() |
![]() | $39.00 | Condition is New, Mars 33243 60000AOM 96 SPST Time Delay Relay, FREE SHIPPING | ![]() |
![]() | $22.00 | Top Pick! Condition is New, MARS 33243 Series 332 24V Fan & Heat One Switch SPST Thermal Sequencer 216962, shipping cost = $18.24 | 99.6% |
![]() | $36.29 | Top Pick! Condition is New, MARS 33243 TIME DELAY RELAY-New In Box, shipping cost = $14.00 | 99.9% |
![]() | $38.00 | Condition is New, NEW MARS 33243 ELECTRIC HEAT SEQUENCER 60000AOM-96 SPST TDR, shipping cost = $20.41 | 100.0% |
![]() | $63.20 | Condition is New, MARS 33243 SPST THERMAL TIME DELAY SPST THERMAL TIME DELAY, FREE SHIPPING | 98.6% |
![]() | $94.45 | Top Pick! Condition is New, Mars Thermal Time Delay Relay 33243 DPST 24v, shipping cost = $8.95 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $16.00 | Condition is New – Open box, Mars Lennox 27P95 33243 Time Delay Relay On 1-60 Sec Off 1-45 NOS, FREE SHIPPING | 100.0% |
![]() | $19.99 | Condition is New – Open box, MARS 33243 Electric Heat Sequencer Furnace On 1-60 Off 1-45, shipping cost = $5.48 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $14.95 | Condition is Used, OEM MARS 33243 ELECTRIC HEAT SEQUENCER HVAC USA SELLER FREE SHIPPING GUARANTEED, FREE SHIPPING | 99.0% |

The Lennox Mars 33243 Delay Relay is a crucial component in various HVAC (Heating, Ventilation, and Air Conditioning) systems, specifically those manufactured by Lennox. This delay relay is designed to provide precise control over heating and cooling cycles, ensuring optimal comfort and energy efficiency.
The Mars 33243 is a 1-60 second, 1-45 nos delay relay. This means it can delay the operation of a heating or cooling system for a range of 1 to 60 seconds, and can handle up to 1-45 nozzles or contacts. The delay function is essential in allowing the system to maintain a consistent temperature by adjusting the timing of the heating or cooling cycle.
This delay relay is compact and durable, designed with a rugged construction to withstand the demanding conditions of HVAC applications. It features a clear, easy-to-read labeling system, making it simple to identify the functions of each contact.
The Mars 33243 is built to last, with a long-life contact design that minimizes the need for frequent replacements. It is also compatible with a wide range of Lennox HVAC systems, making it a versatile and reliable choice for contractors and homeowners alike.
Installation of the Mars 33243 is straightforward, with clear instructions provided in the product packaging. It is designed to fit seamlessly into existing wiring configurations, allowing for quick and easy integration into your HVAC system.
In summary, the Lennox Mars 33243 Delay Relay is an essential component for optimizing the performance of Lennox HVAC systems. Its precise control functions, compact design, and long-lasting construction make it a reliable and cost-effective solution for managing heating and cooling cycles. Whether you're a contractor installing a new system or a homeowner maintaining an existing one, the Mars 33243 is an indispensable tool for ensuring comfortable and energy-efficient climate control.
The Lennox Mars 33243 Delay Relay is a component used in HVAC (Heating, Ventilation, and Air Conditioning) systems to control the delay in starting and stopping the compressor. Here are some pros and cons that might help you decide whether to buy this part.
Pros:1. Reliability: Lennox is a well-known brand in the HVAC industry, and this delay relay is designed to meet their high standards for durability and performance.
2. Versatility: This delay relay can be used with various Lennox compressors, making it a convenient and cost-effective solution for repairing multiple systems.
3. Adjustable Delay: The delay relay offers adjustable delay times between 1 and 60 seconds and 1 and 45 nos (number of cycles), allowing you to fine-tune the compressor's start and stop cycles to optimize system performance.
4. Easy Installation: The delay relay is designed to be easy to install, with clear instructions and straightforward wiring.
Cons:1. Cost: Compared to some other delay relays on the market, the Lennox Mars 33243 can be more expensive.
2. Limited Compatibility: Although it is compatible with many Lennox compressors, it may not be suitable for all models, so it is essential to verify compatibility before purchasing.
3. Manual Adjustment: While the adjustable delay feature is convenient, it requires manual adjustment, which could be time-consuming and error-prone.
In conclusion, the Lennox Mars 33243 Delay Relay is a reliable and versatile solution for controlling the start and stop cycles of Lennox compressors. Its adjustable delay feature offers customization options, but its cost and manual adjustment process are potential drawbacks. Ultimately, if you need a high-quality delay relay for your Lennox HVAC system and are willing to pay the premium price, this part is a solid choice. However, if you're on a tight budget or prefer an easier-to-adjust solution, you may want to consider alternative options.
Details:
Mars lennox 27P95 33243 time delay relay on 1-60 sec off 1-45 nos. Condition is new. Shipped with USPS ground advantage.
specifications maxohvac:
- brand: Mars
- mpn: 33243
- upc: 685744332435
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
returns maxohvac:
- policy: no returns
shipping maxohvac:
- carrier: usps
- type: calculated
- transit: 5-12 days
- service: usps ground advantage
- class: standard
offer maxohvac:
- options: ship-to-home
- availability: in stock
- in stock #: 5
- started: august 22, 2025
- sold #: 13
- prices: $8.00–$94.45
- item condition:
- New
- New – Open box
- Used
seller maxohvac:
- city: birmingham, alabama
- # reviews: 56
- rating: 95.7%
payments maxohvac:
- wallet: google-pay
- credit card: visa
- other
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