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Availability: 185 In Stock
Sku: TRW1805-500

Logico 18/5 Thermostat Wire: The Heartbeat of Modern HVAC Systems

Temperature regulation is an intrinsic part of our lives. From the warmth of our homes on a cold winter night to the cooling relief of an air conditioner on a scorching summer day, HVAC systems ensure we stay comfortable year-round. Central to the operation of these HVAC systems is the thermostat, and at the core of any thermostat's functionality is the wire that connects it all. The Logico 18/5 Thermostat Wire emerges as an outstanding choice for this vital role, merging quality with technological superiority.

Features & Benefits

  1. 18 Gauge Solid Copper: With the robustness of 18-gauge wire, this product ensures efficient signal transmission, which translates to accurate temperature readings and adjustments.

  2. Five-Conductor Design: The 18/5 configuration means there are five distinct wires, catering to modern thermostats that manage multiple functions such as heating, cooling, fan, and more.

  3. CMR (Communications Multipurpose Cable, Riser): The CMR rating indicates that the wire is designed for use in vertical risers and offers fire-resistance, ensuring added safety in residential and commercial installations.

  4. Generous 500FT Length: Ideal for both small homes and larger commercial spaces, the 500-foot length ensures ample wire for comprehensive installations without the need for unnecessary splicing or extensions.

  5. Durable Outer Jacket: Protecting the internal solid copper wires, the outer jacket is robust, shielding the cables from potential physical damage or wear and tear over time.


  • Residential HVAC Systems: Ensure your home's heating, ventilation, and air conditioning system operates seamlessly with a reliable thermostat wire connection.

  • Commercial HVAC Installations: In larger spaces like offices or factories where precision heating and cooling are vital, this wire ensures consistent performance.

  • Smart Thermostats: Modern smart thermostats, with their multifunctional features, benefit immensely from the five-conductor design.

Installation Tips

  • Follow Thermostat Guidelines: Different thermostat models might have varied installation instructions. Always consult the thermostat's manual for accurate wiring procedures.

  • Secure Installations: Ensure that the wire is securely fastened, especially at connection points, to prevent loose connections which might affect system performance.

  • Avoid Sharp Bends: Like all cables, sharp bends can compromise the integrity of the wire. Ensure a smooth route for the wire during installation.

  • Safety First: While dealing with any electrical installations, always ensure the power supply is turned off to avoid accidental shocks or short circuits.


The Logico 18/5 Thermostat Wire isn’t just a product; it's a promise of efficiency, reliability, and peace of mind. As HVAC systems become increasingly sophisticated, the need for a reliable thermostat wire becomes paramount. With its blend of superior construction, thoughtful design, and quality assurance, Logico's offering stands tall as a beacon of excellence in the HVAC space. Whether you're an installer, a homeowner, or a business, entrusting your HVAC's heartbeat to Logico ensures a warm, or cool, hassle-free experience.

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Tektel always ships as quickly as possible. It is our goal to ship your item(s) within one business day (or on Monday if we receive payments over the weekend). We understand that you are anxious to get your hands on your merchandise as quickly as possible. Below are some frequently asked questions. PLEASE NOTE: If you pay via Paypal, we ship ONLY to the shipping address in your PayPal account. If this is not your current address, then please update your PayPal shipping address. We are not responsible for missed shipments if your address has changed and you have not updated your PayPal shipping address.


We stand behind the products we sell. If for any reason you are not satisfied with your purchase, we’ll be happy to process an exchange or refund the product less Shipping within 30 Days of your purchase.

At Tektel, our business depends on satisfying all of our customers all of the time.

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If for whatever reason, the item that you receive does not match the description, we are happy to work with you on resolving the issue. Below are the pre-conditions for authorizing refunds on returned items:

  • The buyer must notify Tektel of the issue within 30 days of receiving the item.
  • Refunds can take up to 10 days to process once the items are received at our facility, but we will do everything we can to process refunds as quickly as possible.
  • 30-Day money back guarantee.
  • Please return item to address shown on package. Return shipping is at the buyer’s expense.
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  • Shipping and handling is non-refundable.
  • Please be aware that although some of our items are offered with free shipping, our actual outbound shipping costs will be deducted from the return refund.


How much is shipping? Tektel offers free shipping on products over $50 dollarrs to the continental USA. (Excluding Alaska, Hawaii, and other U.S. Territories).

Can you ship outside of the United States? No. We only ship within the Continental US. If you are interested in international shipping, please contact us.

Can you ship to Alaska, Hawaii, or other U.S. Territories? No. We only ship to the lower 48 states of the United States.

Can you ship to an Air, Army, or Fleet Post Office (APO/FPO) overseas? No. We only ship to the lower 48 states of the United States.

How long before you ship my item? Tektel ships out every order as quickly as possible after the payment is received. For same day shipping, payment needs to be recieved before 3:00 pm PST. Otherwise, your item will be shipped the next business day. If payment is received on the weekend, your item will be shipped out on Monday.

How long does shipping take? Delivery is usually within 3-5 business days.

Which carrier do you use? We ship with UPS, USPS, and FEDEX depending on the item and location.


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