HVAC Company in Tulsa
HVAC Installation in Tulsa: How to Choose the Right System
By the Tellez Heating and Air team

If you have spent a full year in Green Country, you know our weather doesn’t pull any punches. Between the suffocating, 100-degree humidity of August and the bone-chilling ice storms of February, your heating and cooling system is the undisputed hardest-working piece of machinery in your home.
When your old system finally reaches the end of the line—whether it’s blowing warm air in the summer or suffering from a cracked heat exchanger in the winter—the prospect of replacing it can be incredibly daunting. A full system replacement is a major financial investment. The moment you start searching for an hvac installation tulsa, you are hit with a wave of confusing terminology: SEER2 ratings, load calculations, and heat pump conversions.
How do you know what you actually need?
At Tellez Heating and Air, our family-owned team has been guiding homeowners through this exact process since 2009. Serving Tulsa Midtown, South Tulsa, Broken Arrow, Coweta, Owasso, Jenks, and Bixby, we bring Julio’s 30+ years and Alec’s 10+ years in the trade to every consultation. We believe you shouldn’t have to be an HVAC expert to get a fair, honest deal.
In this comprehensive guide, we will break down the four critical factors you must consider when choosing a new system, explain how efficiency ratings impact your wallet, and show you exactly what to expect on installation day.
4 Critical Factors for Choosing the Right HVAC System
Buying a new HVAC system isn’t like buying a refrigerator—you can’t just pick the sleekest box off a showroom floor. The system must be engineered to fit the exact physical requirements of your home. Here is what a professional contractor will evaluate before giving you an estimate:
1. Proper Sizing (The Manual J Load Calculation)
When it comes to HVAC, bigger is not better. If a contractor tries to sell you the largest unit possible “just to be safe,” run the other way.
- Too Big: An oversized unit cools the house too quickly and shuts off before it has time to remove the humidity from the air, leaving your home feeling like a damp cave. It also causes severe wear and tear from “short cycling.”
- Too Small: An undersized unit will run nonstop, driving up your utility bills without ever actually reaching your target temperature.
A professional will perform a strict load calculation, factoring in your square footage, ceiling height, window quality, and insulation levels to find the perfect “Goldilocks” size for your home.
2. Efficiency Ratings (SEER2 and AFUE)
HVAC efficiency is measured by two main acronyms:
- SEER2 (Cooling): Seasonal Energy Efficiency Ratio. The higher the number, the less electricity the unit uses to cool your home. The current legal minimum in Oklahoma is 14.3 SEER2.
- AFUE (Heating): Annual Fuel Utilization Efficiency. A standard gas furnace operates at 80% AFUE (meaning 20% of the heat escapes out the exhaust). High-efficiency models operate at 90-98% AFUE, capturing almost all the heat.
3. System Type: Gas Furnace vs. Heat Pump
Most Tulsa homes are equipped with a central air conditioner paired with a natural gas furnace. However, electric heat pumps are becoming increasingly popular. A heat pump acts as an air conditioner in the summer, but runs in reverse during the winter to pull ambient heat from the outside air into your home. If your home doesn’t have existing natural gas lines, a high-efficiency heat pump is usually your best option.
4. The Condition of Your Ductwork
Your ductwork is the “lungs” of your home. You could buy the most expensive, ultra-efficient system on the market, but if it is attached to crushed, leaky, or undersized ductwork in your attic, you will still have hot and cold spots. A reputable installer will inspect your ducts to ensure they can handle the airflow of modern machinery.
What to Expect on Installation Day
When you choose a licensed, professional team for your hvac installation tulsa, the process is highly choreographed, safe, and surprisingly clean.
Safe Removal and Disposal
Our technicians lay down protective floor coverings, safely recover the old chemical refrigerant (Freon), and disconnect the high-voltage wiring.
Infrastructure Modifications
Ensuring a perfect, airtight fit
We modify the existing sheet metal ductwork plenum to perfectly align with the dimensions of the new indoor air handler or furnace.
Installation and Calibration
The new indoor and outdoor units are set into place. We braze the new copper refrigerant lines, pressure-test the system with nitrogen to ensure there are zero leaks, and pull a deep vacuum to remove any moisture.
Commissioning and Walkthrough
Checking for safety and optimal performance
We release the new refrigerant, turn on the system, and meticulously measure the subcooling, superheat, and electrical amperage to ensure it is running at factory specifications. Finally, we walk you through your new thermostat and show you how to change the filter.
The Tellez Difference: Integrity
You are making an investment that will dictate your family’s comfort for the next 15 to 20 years. You deserve a contractor who respects that investment. Since 2009, the Tellez family has operated under a strict code of ethics: we treat your home and your budget exactly the way we treat our own.
Why Green Country Homeowners Choose Us for Installations:
- Total Transparency: We offer free estimates on new equipment, and we explain your options before any work begins.
- No High-Pressure Sales: We educate you on your options and step back so you can make the best decision for your family.
- Payment Plans: Payment plans from 6 months up to 15 years through GoodLeap and Synchrony. Some options include limited-time interest-free promotions. Ask us which fits your project.
- Service Club: Service Club members get two precision tune-ups a year (spring AC and fall furnace), 15% off repairs, and priority scheduling.
- 100% Satisfaction Guarantee: We stand behind our work. We guarantee that repairs on your equipment are fixed right or the repair is free. If a repair fails during the first year, we will repair it again at no charge.
Ready to Upgrade Your Comfort?
Don’t wait until your aging system completely dies in the middle of a July heatwave or a January ice storm. If you are tired of expensive repairs and high utility bills, it is time to explore your replacement options.
Call Tellez Heating and Air today at (918) 809-2017 or email us at tellezhvacr@gmail.com to schedule your free, no-pressure installation estimate.
Have a question about your system?
We are a family team serving the Tulsa area since 2009. Reach out and we will help you figure out the right next step, with no high-pressure sales.
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