ACiQ TL04-1 Smart WiFi Thermostat – 24V & HA/HB Compatible

ACiQ TL04-1 Smart WiFi Thermostat | Dual Compatible HVAC Controller | With Smart App

ACiQ TL04-1 Smart WiFi Thermostat | Dual Compatible HVAC Controller | 24V Touchscreen

ACiQ TL04-1 Smart WiFi Thermostat | Touchscreen

ACiQ TL04-1 Smart WiFi Thermostat | Home

ACiQ TL04-1 Smart WiFi Thermostat | Schedule

ACiQ TL04-1 Smart WiFi Thermostat | Comfort Preset

ACiQ TL04-1 Smart WiFi Thermostat | Mode

ACiQ TL04-1 Smart WiFi Thermostat | Vacation Mode

Customer reviews

Rating:

4.5 out of 5

4.5 out of 5 View All 9 Reviews Add Your Review

In Stock - 1165 Ready to Ship

ACiQ

In stock

Model

TL04-1

199661

$179.99

Product Features

ACiQ Communicating & 24V Compatible
Built-In Wi-Fi Smart Control
Works with the ACiQ Home App
Easy-to-Use Touchscreen Display
Programmable Comfort Schedules
Heat Pump & Auxiliary Heat Compatible

5 Questions Answered

Description

One Smart Thermostat for ACiQ Communicating & Traditional HVAC Systems

The ACiQ TL04-1 Smart Thermostat gives you the flexibility to control your HVAC system in two different ways. Use it as an advanced communicating thermostat with compatible ACiQ equipment or set it up as a traditional 24V thermostat for most conventional heating and cooling systems. Built-in Wi-Fi, an easy-to-use touchscreen, and smart-device control through the ACiQ Home app make it simple to manage your comfort at home or away.

Key Benefits

Communicating & 24V Control - Use with compatible ACiQ communicating equipment or as a traditional 24V thermostat.
Ideal for ACiQ Inverter Systems - HA/HB communication lets compatible ACiQ equipment communicate directly with the thermostat.
ACiQ Home App Control - Adjust temperatures and manage your comfort from a compatible smartphone or tablet.
Broad HVAC Compatibility - Works with most traditional 24V heating, cooling, and heat pump systems.
Easy Touchscreen Control - A modern touchscreen makes everyday temperature and system adjustments simple.

Smarter Comfort. Sleek Control.

The ACiQ TL04-1 Smart Thermostat is engineered to bring precise, intelligent control to your home’s HVAC system. Compatible with both standard 24V wiring and HA & HB communication protocols, it delivers flexibility for new builds or system upgrades.

One Thermostat, Two Ways to Control Your HVAC System

What makes the TL04-1 different is its ability to work as either a communicating or traditional thermostat. Pair it with compatible ACiQ equipment using HA/HB communication for direct communication between the thermostat and HVAC system, or configure it for traditional 24V control with most conventional HVAC equipment. This flexibility makes the TL04-1 a smart choice whether you're building a new ACiQ system or upgrading the thermostat in an existing home.

Get More from Compatible ACiQ Inverter Equipment

When connected to compatible ACiQ equipment through HA/HB wiring, the TL04-1 becomes a communicating thermostat that allows the thermostat and HVAC equipment to share information directly. This makes it an ideal control option for compatible ACiQ inverter systems and helps the equipment take advantage of its advanced operating capabilities.

Control Your Comfort with the ACiQ Home App

Connect the TL04-1 to the ACiQ Home app for convenient control from a compatible smartphone or tablet. Adjust temperatures and manage comfort settings remotely, giving you easy access to your HVAC system whether you're at home or away. The TL04-1 is also compatible with the NetHome Plus app for smart-device control.

Also Works with Traditional 24V HVAC Systems

You don't need a communicating ACiQ system to use the TL04-1. It can also be configured as a traditional thermostat for most 24V HVAC systems, including compatible one- and two-stage heating and cooling equipment and heat pumps with auxiliary and emergency heat.

What's Included

ACiQ TL04-1 Smart Thermostat
M-Base
Trim Plate
Wire Labels
Screws & Anchors
Installation Guide

Product Specs

More Information
ACiQ TL04-1 Smart WiFi Thermostat – 24V & HA/HB Compatible
Feature	Spec
SKU	TL04-1
Weight (in lbs)	0.7
Brand/Manufacturer	ACiQ
Resources	Installation and Owner's Manual User's Manual You will need Adobe® Acrobat® Reader to view PDF documents.
Safety Information	PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.

Reviews 9

Top reviews

Works Good but limited features and a little quirky.

Quality
80%

Service
80%

Price
60%

Paired with the MrCool UHP18036-O and UAH18036-O HA/HB wiring. Our last Heat pump was Single stage Goodman, with an very basic Digital thermostat. This thermostat and the heat pump do a good job making the house more comfortable. The thermostat has required some tinkering with the service menu. I've changed the following: Follow Me On, Fan Auto, Constant Fan Off. I also changed the Temp Comp - Cool to 2, as I think that starts the ramp down sooner as it approaches the set point. I also don't have auto heat/cool and just manually do the switch from heating to cooling. I've also set enhanced defrosting on to combat the recent ice storm(I do have it 4-6" risers).. The weird part is the thermostat sometimes overshoots the set point(based on its own readings). It is mostly limited to about a degree. I'm learning to just not watch it, as the house feels better as a whole. Only about a month and a half of ownership, so far. The Thermostat is rather basic and overpriced, but it still is the best option for a communicating setup, that I've found. I hope, in the end, that using an HA/HB setup with this thermostat will improve comfort and energy savings but it will take a lot longer to figure that out, with my sample size of 1.
Review by NCHomeOwner
Posted on 1/30/26
Works just fine, it could do so much more

Quality
100%

Service
100%

Price
80%

Im using the ACQI Smart thermostat on a MR. Cool Universal Heat Pump, because MR Cool does not offer a WIFI HA/HB Communicating thermostat. All these units are the same, a Madeia with their brand logo on them. Thermostat works just fine, easy to install and setup. Temperature reading is accurate and connects to WIFI Just fine. It only allows one connection at a time via WIFI. There are some service parameters to adjust, but I cant find anyone in ACQI engineering that understands the settings, which would help optimize the system. As stated, it works just fine. There is some much performance information available with these heat pumps. It’s a shame someone is not providing a thermostat that would offer that.
Review by Not Many Choices in the HA/HB world
Posted on 1/26/26
Limited features

Quality
60%

Service
100%

Price
60%

I had previously used a Nest thermostat to control my variable speed inverter heat pump, but that only controls it by 24v connections which lack optimized control of fan and compressor. Switched to this new thermostat to have full control via its communication connection. The problem is I gained some features but lost others. Example features I don’t have with those new ACIQ thermostat is settings to control the temperature at which the aux heat turns on, the ability to run aux heat and heat pump at the same time, set points for my dehumidifier , as well as a good scheduling system. It’s very barebones compared to a nest or Ecobee thermostat , but it’s required to use the communication interface for varying the output of the fan and heating.
Review by Darin
Posted on 1/19/26
All ok except for app

Quality
100%

Service
100%

Price
100%

Purchased to use with a Senville ducted heat pump. Works just fine, seems to support all the features of the Senville. Only issue is that the app almost always disconnects from the thermostat. It is 3 extra clicks to reconnect, and so far that has always worked. Same issue android and apple. Using with the HA/HB terminals. Hope they resolve the app issue, asni will need another one here in a few months.
Review by Rob
Posted on 1/19/26
Its Great !!

Quality
100%

Service
100%

Price
100%

I received myACiQ smart thermostat, and it was an easy install just hooked up my HA and HB wires and I was all set. thank you to the people that. HVacDirect !!
Review by Eddy
Posted on 1/16/26
ACiQ TL04-1 Smart Thermostat

Quality
100%

Service
80%

Price
60%

We have an ACIQ ducted system with a Floor unit installed. The thermostat came with the system was not WIFI compatible. We installed the ACIQ smart thermostat with WIFI and HA/HB compatible. There were two minor issues on installation. With HA/HB setup will require R & C wires installed for powering the unit. Installation guide will say this in start up section. The other issue is all HVAC systems,(ours were ducted unit and floor unit will need to be in same mode,(heating, cooling, etc.) or the thermostat will flash a communication error. Once we figured this out, everything worked great.
Review by ACIQ WIFI Thermostat
Posted on 12/27/25
Excellent

Quality
100%

Service
100%

Price
100%

Looks great, super-fast and easy setup
Review by Bob T
Posted on 10/20/25
These things blow away the stock ACiQ thermostats!

Quality
100%

Service
100%

Price
100%

Finally! A thermostat that matches the capabilities of the ACiQ heatpumps and air conditioners they are paired with. I replaced my KJR-120N "smart" thermostats that look like they are left over from the early 2000's with these beauties and could not be happier. For one thing, the temperature is accurate right out of the box. The color touch screen user interface is intuitive, setup is simple, and ease of use could not be any friendlier. WiFi setup was a breeze too - all at a decent price point. The modern design fits in contemporary décor, and "pop-in" bracket made mounting to the wall simple. Printed instruction manual was not needed, but nice to have and accurate.
Review by Henry
Posted on 10/16/25

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Accessories

FAQ's

Customer Questions

Is this thermostat required to be connected to the internet to work for keeping temperature. If network is down for a few days it will still work?

The ACiQ TL04-1 Smart Thermostat is NOT required to be connected to the internet to perform its basic function of keeping the temperature. If you have any further questions, please call us and we will be happy to assist you.

Does this work with the ACiQ ACIQ-60-HPD / ACIQ-48-ACL-B to easily set up the backup propane heat? On the last installation we used the Honeywell T6 and it took a bit to get the settings adjusted correctly. In Connecticut we had to show that the back up propane was locked out to 20 degrees F.

Yes, the ACiQ TL04-1 Smart Thermostat is compatible with the ACiQ-60-HPD / ACIQ-48-ACL-B system and should allow you to set a backup heat lockout temperature like your required 20 degrees F for propane (auxiliary) heat. If you have any further questions, please call us and we will be happy to assist you.

Giveb that ACiQ heat pumps are built by Midea, am I right to suspect that this thermostat is a re-branded Midea MTL04-1? That would make it likely compatible in HA/HB communication with recent Midea central heat pumps. I have a Midea system that was installed with a third party 24v thermostat and looking to upgrade

Yes, you are likely correct: the ACiQ TL04-1 thermostat is widely considered a re-branded version of the Midea MTL04-1 wired controller and is designed for direct HA/HB (RS-485) communication with ACiQ/Midea central heat pump systems, allowing you to fully utilize the system's variable-speed features. If you have any further questions, please call us and we will be happy to assist you.

Does this require shielded wire to be ran? Does it need to be stranded?

No. The TL04-1 does not require shielded or stranded wire. The installation manual specifies that the wiring should meet CL2 requirements and that the thermostat terminals accept 16–24 AWG conductors, but it does not require shielded or stranded cable. Standard HVAC thermostat wire is appropriate for most installations, provided it meets local electrical codes and the system manufacturer's requirements. If you have any further questions, please call us and we will be happy to assist you.

Can the thermostat actually stop the blower in cooling mode between cooling cycles using HA/HB wiring?

Yes, but with HA/HB wiring the TL04-1 does not directly control the blower through a separate G wire; the indoor unit’s communicating logic determines whether the blower stops between cooling cycles, and on some current firmware the fan may continue running even when cooling is satisfied. If you have any further questions, please call us and we will be happy to assist you.

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Why Choose ACiQ?

ACiQ designs AC systems that are based on principles learned from nature: clean, energy-efficient, and quiet. ACiQ systems are built in a such a way that they are easily adapted to fit multiple variations a homeowner needs. ACiQ offers technology in mini-split and full split inverter system offerings that provide the smartest way to buy and save on your home’s comfort solution, so that it meets the needs of your family. ACiQ specializes in home comfort, regardless of your needs.