System Replacement & Installation

A replacement is an engineering job, not a shopping decision.

Two installers can fit the same equipment in the same house and get different results, because most of the outcome is in the parts you cannot see: the load calculation, the duct system it is connected to, the airflow it actually achieves, and the charge it ends up with. Thornquil quotes all of it, in writing, before anything comes off the truck.

Request a replacement estimate Call (239) 555-0142

What you get

What the visit actually includes.

A room-by-room load calculation
Orientation, glazing, insulation, infiltration and the actual square footage. Sizing from the old unit's label repeats whatever mistake was made last time.
An assessment of what it connects to
Duct sizing, static pressure, return capacity and the condition of existing runs. New equipment on an undersized duct system underperforms on day one.
A written scope, itemised
Equipment model numbers, what is being replaced, what is being reused, line set, drain, electrical, pad or stand, thermostat, and permit handling.
Commissioning, documented
Airflow verified, charge weighed and confirmed, temperature split and static pressure recorded, and the readings handed to you as the system's baseline.
Options, not a single price
Typically three: a straightforward like-for-like replacement, a mid-tier with better humidity control, and a variable-capacity option. Same scope, different equipment.

How we work

The sequence, every time.

Survey
A technician measures the house, inspects the existing duct system and equipment locations, and photographs the conditions the quote depends on.
Design and options
Load calculation, equipment selection, and any duct or return corrections priced separately so you can see what is equipment and what is infrastructure.
Written proposal
You get the scope, the model numbers, the exclusions and the schedule. Nothing verbal, nothing assumed.
Installation day
Floors and pathways protected, old equipment removed and hauled away, new system set, brazed under nitrogen, evacuated, charged by weight.
Commissioning and handover
We verify the numbers, register the manufacturer warranty on your behalf, walk you through the thermostat, and leave the documentation with you.

Gulf Coast specifics

Why this work is different here.

Salt air, humidity, attic temperatures and a cooling season that runs most of the year. All four change what fails, how early, and what is worth doing about it.

Sizing for humidity, not just heat
On this coast a system that is too large cools the air fast and shuts off before it has removed the moisture. The result is a house that is cold and clammy. Right-sizing is a comfort decision here, not only an efficiency one.
Condenser placement and salt exposure
Coastal installations benefit from coil coatings and thoughtful placement. Where the unit sits relative to prevailing wind and irrigation spray affects how long it lasts.
Elevation, pads and storm season
Equipment height, stand type and tie-down details matter in a flood-prone, wind-rated region, and they are part of the permitted scope rather than an afterthought.
Seasonal-resident considerations
If the house sits empty for months, humidity control while you are away is a design requirement. There are equipment and control choices that handle it properly.

Questions

About system replacement & installation

(239) 555-0142

How long does a changeout take?

A straightforward residential replacement is usually a single day. Jobs that include duct modifications, electrical changes or difficult equipment access can run into a second day, and the proposal says which one yours is before you commit.

Do I need to replace the ductwork too?

Often no, sometimes partly. The survey measures it rather than guessing, and any duct work is quoted as a separate line so you can see exactly what you are being asked to pay for and why.

Is a bigger system better?

No, and on the Gulf Coast it is actively worse. An oversized system satisfies the thermostat quickly, shuts off, and leaves moisture in the house. Correct sizing is what makes a house feel comfortable at a higher thermostat setting.

What about permits?

Replacement work is permitted and inspected. Thornquil handles the filing and the inspection appointment as part of the job.