Engineered in Germany

Case Study · Radiant Heating

A Complete Hydronic Radiant Floor Heating System

One brand for the whole loop — oxygen-barrier PE-RT pipe, matched manifolds, and delivery phased to the build.

Hitze is a German brand of complete heating and potable-water piping systems. This case study shows how a Hitze radiant system comes together for a contractor.

Plan Your Project → Explore the System Used →

Trade & project supply only — Hitze supplies contractors, developers and distributors, not one-off retail.

Hydronic heating pipework, boiler, pump and expansion vessel in a utility room PE-RT · DIN 4726 · EVOH

Project Scope

How a Hitze Radiant System Comes Together

Here is exactly what a radiant floor heating project gets from Hitze and how the system is scoped, matched and delivered — from the first sample to a fully commissioned, oxygen-tight loop.

How we work. Every radiant project is scoped from your own zones, floor area and build schedule. You can start with samples or a small trial order — there is no MOQ — and scale to the full loop from there. Send us your drawings and we reply with a scope and a phased delivery plan within one business day.
Who we supplyRadiant / hydronic heating contractors, developers, GCs and distributors
Markets servedNorth America, Europe, UK and 118+ countries
Typical projectMulti-zone radiant floor, from a single home to a multi-storey build
System suppliedOxygen-barrier PE-RT pipe + brass / stainless manifolds + matched connectors
Minimum orderNo MOQ — start with samples or a small trial order
Warranty50-year warranty on the matched pipe-and-fitting system
Response timeScope and phased delivery plan within one business day
Utility room with boiler, pump, expansion vessel and heating pipework of a hydronic system
Plant room — boiler, pump & oxygen-barrier heating pipe

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Inside the Project

What a Single-Source Radiant System Looks Like on Site

From plant room to floor loop to commissioning — one matched system, one accountable supplier.

Boiler, pump, expansion vessel and heating pipework in a hydronic plant room
Plant room — boiler, pump & heating pipe
Wall-mounted manifold circuit in a plant room feeding radiant floor loops
Manifold install — brass / stainless manifold with per-loop flow meters, wall-mounted
Red PE-RT floor heating loops laid on insulation panels feeding a wall-mounted manifold cabinet
Floor loop layout — PE-RT pipe serpentine on insulation, tied to the grid
Manual pressure-test pump with gauge connected for a loop pressure test
Commissioning — loop pressure test with gauge before the slab pour
Stacks of red, blue and white PE-RT heating pipe coils staged on pallets
Phased delivery — pipe coils staged on site for the current pour
PE-RT and PEX heating pipes in blue, orange, white and grey with printed size and standard markings
Pipe print — size & DIN 4726 oxygen-barrier markings
Red Orange Black Pink

The Challenge

A Complete, Oxygen-Tight System — On the Site’s Schedule

The contractor faced three problems that decide whether a radiant floor job runs smoothly or turns into a callback.

  • A complete system, not parts from three suppliers. Pipe, manifolds and connectors had to be sourced together and guaranteed to fit — so one supplier, not the contractor, owns compatibility across the loop.
  • A fully oxygen-tight hydronic loop. In a sealed radiant loop, oxygen diffusing through non-barrier pipe corrodes the boiler, pump and steel manifold parts. The system needed a continuous oxygen barrier the mechanical engineer would sign off on.
  • On-time, phased delivery. Radiant work follows the slab pour and the floor-by-floor build. Everything arriving at once would clog the yard; material had to land with each phase.
End-on view of multilayer PEX pipe showing the oxygen-barrier layer laminated inside the pipe wall
Annotated diagram — three pain points: fragmented supply, oxygen ingress to boiler, one-shot delivery clogging the yard
Why the oxygen barrier matters (industry note): An EVOH oxygen-barrier layer to DIN 4726 blocks the oxygen diffusion that would otherwise rust ferrous components over the system’s life. It is not optional on hydronic loops with steel or cast-iron parts.

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The Solution

One Compatible Radiant System, Delivered in Phases

Hitze scopes and supplies the entire loop as a single, matched system — then stages it to the build.

A Complete System: Pipe + Manifolds + Connectors

Hitze supplies oxygen-barrier PE-RT pipe (EVOH layer to DIN 4726) for the floor loops, paired with brass or 304 stainless steel manifolds (2–12 port) carrying per-loop flow meters, plus matched Euro-cone / compression connectors. The PE-RT radiant pipe and manifolds are engineered together, so the loop is oxygen-tight end to end — no mixing of barrier and non-barrier components.

Single-Source Compatibility & One Point of Responsibility

Because pipe and manifolds come from one brand, compatibility is designed in — pipe sizes (16 / 20 / 25 mm), fittings and manifold outlets all match, and Hitze — not the contractor — owns the interface. That collapses a multi-supplier bill of materials into one order, one spec pack and one accountable supplier — backed by a 50-year warranty on the matched pipe-and-fitting system.

Phased Delivery Aligned to the Build

Delivery is staged to the site: pipe for the slab pour first, manifolds and controls as each zone comes online. Material lands with the work instead of sitting in the yard, keeping cash and space tied to progress. Send us your pour schedule and we map the batch nodes to it, with a reply within one business day.

Phased to the Build

Material That Lands With the Work

1

Pipe for the Pour

Oxygen-barrier PE-RT coils ship first, laid on insulation and tied off before the slab pour of each zone.

2

Manifolds per Zone

Brass / stainless manifolds and controls follow as each zone comes online — matched to the pipe already down.

3

Commission & Repeat

Loops are pressure-tested and commissioned zone by zone; the next batch lands as the build advances.

Warehouse rack aisle with pipe coils, underfloor-heating boxes and shipping cartons staged on pallets for phased dispatch
Phased delivery timeline — pipe → manifolds → controls mapped to the pour schedule

Building a full radiant-floor loop? See the products behind this project — oxygen-barrier PE-RT pipe and matched manifolds from one certified source.

Oxygen-Barrier PE-RT Pipe → Underfloor Heating Manifolds →

The Result

What a Single-Source Radiant System Delivers

The outcomes below describe what the single-source, phased approach is built to deliver on a radiant floor project.

Complete oxygen-tight system from one sourcePipe, manifolds and connectors matched, with the loop sealed to DIN 4726 end to end.
Compatibility risk removed from the contractor’s deskA single-brand system means no mismatched fittings to chase on site — Hitze owns the interface.
Material aligned to each build phasePhased delivery keeps the yard clear and material landing with the work — batch nodes mapped to your pour schedule.
A repeatable system, certified for NA & EUThe products used are standard Hitze lines certified to cUPC, NSF/ANSI 61, DVGW, WRAS and CE — repeatable at volume for other markets.
Installer connecting red heating pipe to a manifold with isolation valves and circulator pump
Completed loop connected to the manifold, pressure gauge on test before hand-over
SKZ Tested DIN 8077/78 EN ISO 15874 DIN 4726 Oxygen Barrier cUPC / UPC NSF/ANSI 61 DVGW WRAS CE + DoP
How Hitze backs the job: Pipe and manifolds come from one brand — so the compatibility risk is off the contractor’s desk — with delivery phased to the pour schedule. There is no MOQ, so you can prove the system on samples or a small trial order before you scale, and the matched pipe-and-fitting system carries a 50-year warranty. Certificate numbers are provided in the Cert Pack and are verifiable at source. See all of our Hitze piping case studies for private-label and wholesale examples too.

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FAQ

Radiant Heating Project FAQ — Contractors, GCs, MEP & Importers

Can I get pipe and manifolds from one supplier for a radiant job?
For the ContractorYes. Hitze supplies the complete hydronic loop under one brand: oxygen-barrier PE-RT pipe (DIN 4726 / EVOH), brass or stainless 2–12 port manifolds with flow meters, and matched 16/20/25 mm connectors. One supplier owns compatibility, so there are no mismatched fittings on site. See contractor supply.
Can delivery be phased to our construction schedule?
For the Developer / GCYes. For phased radiant projects Hitze stages shipments — pipe for the slab pour first, manifolds and controls as each zone goes in — so material lands with the work, not all at once in your yard. Send us your pour schedule and we reply with a phased delivery plan within one business day. Start at Plan Your Project.
How is the loop kept oxygen-tight, and to what standard?
For the MEP ConsultantEvery pipe carries an EVOH oxygen-barrier layer to DIN 4726, blocking the oxygen diffusion that corrodes boilers, pumps and steel manifold parts in a sealed hydronic loop. Manifolds are matched so the barrier is continuous. Full specs on the PE-RT pipe page. For MEP-specced or developer schemes, see our project & spec piping supply.
Is a system like this repeatable at volume for my market?
For the Importer / DistributorYes. The products used — oxygen-barrier PE-RT pipe and matched manifolds — are standard Hitze lines certified to cUPC, NSF/ANSI 61, DVGW, WRAS and CE. There is no MOQ, so you can assess the range on samples or a small trial order first; certificate numbers are provided in the Cert Pack and verifiable at source, and the matched system carries a 50-year warranty. We reply within one business day — request the Cert Pack to assess it.

Get Started

Plan Your Radiant Heating Project

Bring us your zones, floor area and build schedule. We’ll scope a complete, oxygen-tight radiant system — PE-RT pipe and matched manifolds — and a phased delivery plan that lands with your build.

Plan Your Project → Explore the System Used →