G & O Thermal Supply Company

G & O Thermal Supply Company Serving the Midwest’s HVAC, Refrigeration & Controls Needs Since 1968.

🔧 Is your instrumentation telling you the truth?Over time, even the most reliable instruments can drift — and in industr...
06/18/2026

🔧 Is your instrumentation telling you the truth?

Over time, even the most reliable instruments can drift — and in industrial and manufacturing settings, a small measurement error can mean the difference between a quality product and a costly reject. That's why routine calibration isn't just a best practice, it's essential.

Calibration compares your instrument's readings against a higher-accuracy reference to minimize uncertainty and keep things running right. For critical applications, NIST-traceable certification takes it a step further, giving you documented proof of accuracy.

Don't wait for a problem to surface — make calibration a regular part of your maintenance program. 📊✅
👉 Read more: https://www.dwyeromega.com/en-us/resources/the-importance-of-instrument-calibration

Accurate measurement is critical to process control, product quality, and safety. Over time, environmental factors and wear can cause instrument drift, leading to costly errors and operational risk. Routine calibration and NIST-traceable certification help maintain data integrity, reduce variability...

Many corporate buildings today have great equipment — but it's not working together. Your HVAC, ventilation, IAQ sensors...
06/17/2026

Many corporate buildings today have great equipment — but it's not working together. Your HVAC, ventilation, IAQ sensors, and energy management tools are all operating in silos, and that's quietly draining your budget.

Smart zoning and whole-system integration changes that. Here's what a fully connected building looks like:

🌡️ Zone-by-zone climate control — condition only occupied spaces
💨 Ventilation that responds to real-time air quality data
⚡ Automatic load shifting to reduce peak demand charges
📊 A single dashboard with visibility across every system

The result? Lower operating costs, better occupant comfort, and a building that runs itself more efficiently — every single day.

We specialize in commercial building system integration. Ready to see what your facility could look like? Let's talk and we can give you recommendations as to who to trust.

🌡️ Cool deal alert for HVAC/R techs! 🛠️Now through July 31st, purchase a Seitron Be Cool Evo Smart Kit and get a $75 Ama...
06/10/2026

🌡️ Cool deal alert for HVAC/R techs! 🛠️

Now through July 31st, purchase a Seitron Be Cool Evo Smart Kit and get a $75 Amazon Gift Card back! 💰

The Be Cool Evo Smart Kit (Part # POFD021001S9) is a powerhouse 4-way digital manifold kit that includes:
✅ 4-Port Digital Manifold with 5" color touchscreen (with Dark Mode!)
✅ 2 Wireless Smart Temperature Probes — hands-free measurements
✅ Digital Micron Vacuum Gauge with T-fitting
✅ 4 Flexible Hoses
✅ Hard Case

Compatible with A1, A2, A2L & A3 gases including R410A, R32, R454B, and R290. Real-time monitoring, data logging, graphs, and reports — right from the app.

📋 How to claim your $75 gift card:
1. Purchase between April 1 – July 31, 2026
2. Fill out the rebate form (link below)
3. Submit with your receipt by August 31, 2026

👉 Shop the Be Cool Evo Smart Kit: https://www.gothermal.com/products/pofd021001s9
📄 Download the rebate form:https://default.assets-gothermal-prod.roccommercecloud.com/assets%2Fdce8fc7b53bebdb59830c044e56ada8f/seitron-spring-promo-redemption-form-26-fillable.pdf

🌡️ Are you getting the most out of your hydronic HVAC system?Tracking thermal energy isn't just a nice-to-have — it's th...
06/04/2026

🌡️ Are you getting the most out of your hydronic HVAC system?

Tracking thermal energy isn't just a nice-to-have — it's the key to identifying inefficiencies, reducing energy costs, and optimizing system performance. Whether you're working with a custom setup using separate flow sensors, temperature sensors, and a BTU controller, or a fully integrated ultrasonic or electromagnetic heat meter, there's a measurement solution for every application and budget.

Our friends at DwyerOmega just published a great breakdown of how thermal energy measurement works in hydronic systems and what approach might be right for your project.

👇 Check out the full article here:
https://www.dwyeromega.com/en-us/resources/measuring-thermal-energy-in-hydronic-systems

And as always, G&O Thermal Supply is here to help you find the right products for the job. Give us a call or visit gothermal.com!

From thermostats to full building automation — we're the controls supplier that says YES more often. More brands. More S...
06/03/2026

From thermostats to full building automation — we're the controls supplier that says YES more often. More brands. More SKUs. More solutions. Less time chasing parts.
Come see the difference a complete inventory makes.

Yesterday, we honored and remembered the brave men and women who made the ultimate sacrifice in service to our country.T...
05/26/2026

Yesterday, we honored and remembered the brave men and women who made the ultimate sacrifice in service to our country.

Their courage, dedication, and selflessness will never be forgotten.

From all of us at G&O Thermal Supply Co., thank you to our fallen heroes, veterans, active-duty military, and military families for your service and sacrifice.

Thank you! 🇺🇸

05/20/2026

Mechanical and solid state relays both serve the same purpose, but their performance can vary in four critical ways. Get a high‑level breakdown before your next relay selection.

Compare Designs ➡️ https://hubs.la/Q04gF3yl0

Another great turnout at today's Honeywell  Optimizer Unitary/ IRM Advanced Training today. Thanks to all those that att...
05/12/2026

Another great turnout at today's Honeywell Optimizer Unitary/ IRM Advanced Training today. Thanks to all those that attended this course and we will see you all tomorrow for day two!

ATTN: This 3-day course introduces the student to advanced Optimizer Unitary and VAV topics. Class Topics include Creati...
05/11/2026

ATTN: This 3-day course introduces the student to advanced Optimizer Unitary and VAV topics. Class Topics include Creating and Deploying Station Templates, Device Templates, Component Templates, and Application Templates. Utilizing and Deploying Multiple BACnet UDP Ports. IRM Application Annotation and Configuration Settings. PID Loop Tuning and AIA Control. System Terminal Load calculation and reset logic. BACnet Schedules, Calendars, Optimal Start Configuration and Auto Time Sync. Splitting and branching applications. Prerequisite:

Contact Mark Shipley to register ([email protected]) | Prerequisite: Honeywell Optimizer Unitary / IRM HTTP-208

Address

5435 N. Northwest Highway�
Chicago, IL
60630

Opening Hours

Monday 6am - 4:30pm
Tuesday 6am - 4:30pm
Wednesday 6am - 4:30pm
Thursday 6am - 4:30pm
Friday 6am - 4:30pm

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