Full plumbing & heating for a 17th-century manor in Steyning

Manor House, Steyning BN44 | Heritage Plumbing & Heating

November 19, 20253 min read

17th Century Manor House, Steyning BN44

Heritage Plumbing & Complete Hybrid Heating Installation — Listed Country Property


Preserving History While Delivering Modern Comfort — A Complete Hybrid Heating & Plumbing System for a 17th Century Manor House

When a heritage property demands modern performance, the solution must respect its past while engineering its future.

Set deep in the Sussex countryside, this 17th-century manor house in Steyning BN44 required a full plumbing and heating redesign — one that delivered high-pressure hot water, efficient zoned heating, and cutting-edge renewable energy systems, all while protecting the building’s historic character.

With multiple wings, seven bathrooms, and strict conservation constraints, this project demanded precision, sensitivity, and engineering excellence.

Sable Projects delivered a complete hybrid system designed for comfort, efficiency, and long-term reliability — without compromising the essence of this remarkable home.


Steyning BN44 — heritage plantroom installation with heat pumps, oil boilers, and Joule cylinders by Sable Projects.


The Homeowner’s Challenge

This large manor house required:

  • Strong, reliable hot water for seven bathrooms

  • Zoned heating across four wings

  • A hybrid system balancing renewable + traditional heating

  • UFH on ground floors + 90 cast iron radiators upstairs

  • Respect for listed building restrictions

  • Complete pipework upgrades and mains boosting

The challenge was clear:
Bring 21st-century comfort into a 17th-century building — without disturbing its heritage.

This required careful engineering, expert coordination, and a team who understood the responsibility of working within listed properties.

They turned to Sable Projects.


Our Role: The Guide

We led the project with:

  • Conservation-sensitive design

  • Collaboration with heritage consultants

  • Complex hybrid heating integration

  • Precision installation within fragile structures

  • System layouts optimised for access & longevity

Our purpose was simple:
Make this historic home warm, reliable, and future-proof — without losing one ounce of its charm.


Our 3-Step Plan

1️⃣ Design & Planning — Engineering With Sensitivity

Working alongside conservation specialists and the main contractor, we developed:

  • Heat-load calculations across multiple wings

  • Zoning layouts for radiators + UFH

  • Sizing for heat pumps, oil boilers & cylinders

  • Pipe routing that avoided original timber, stonework & features

  • CAD schematics for plant integration

Goal: Modern performance with zero compromise to heritage structure.


Steyning BN44 — careful pipe routing around heritage beams during installation.


2️⃣ Installation — Precision Meets Conservation

We delivered a complete mechanical upgrade:

  • Duty Point Scuba Tank for high-pressure water supply

  • Three Joule unvented cylinders connected in parallel

  • Three ASHPs + two oil-fired commercial boilers for hybrid heating

  • Maincor UFH throughout lower floors

  • 90+ cast iron radiators across upper levels

  • Full new pipework & incoming water mains upgrade

  • Plumbing for seven luxury bathrooms

Every connection, bracket, and fixing was installed with minimal impact to original structure.


3️⃣ Testing & Handover — A System Built for Centuries

We completed:

  • Full pressure testing

  • System flushing & balancing

  • Plant commissioning to manufacturer standards

  • Hybrid control optimisation

  • Client training & system walkthrough

The end result was a balanced, whisper-quiet, energy-efficient mechanical system engineered for decades of service.


Three ASHPs + two oil-fired commercial boilers for hybrid heating


Challenges & Solutions

1️⃣ Listed Building Constraints

Challenge: Protecting historic timber and stonework.
Solution: Custom routing + reversible fixing points to preserve all original features.

2️⃣ Complex Hybrid Plant Integration

Challenge: Multilevel plantroom with limited space.
Solution: Engineered compact layout for pumps, boilers, cylinders & controls.

3️⃣ High System Demand

Challenge: Seven bathrooms + multiple wings.
Solution: Three Joule cylinders + Scuba Tank for uninterrupted pressure.

4️⃣ Balanced Renewable & Traditional Heat

Challenge: Matching ASHP output with oil boiler load.
Solution: Bespoke hydraulic control strategy.


The Final Outcome (Transformation)

The manor house now benefits from:

  • High-pressure hot water throughout

  • Even, efficient heating across all wings

  • Reduced running costs via renewable integration

  • Full preservation of period features

  • 90+ cast iron radiators & UFH working in harmony

  • A future-proof, serviceable system

This is craftsmanship, engineering, and heritage protection — all working together.


Key Takeaways

  • Heritage homes can achieve modern comfort without compromising character

  • Hybrid heating offers efficiency, resilience, and performance

  • Cast iron radiators remain perfect for period properties

  • Expertise is essential when working within listed buildings


🔵 Start Your Heritage Home Plumbing & Heating Project

Let’s bring modern comfort to your period property — carefully, respectfully, and expertly.

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Sable Projects is a trusted plumbing, heating & renewable specialist serving Hertfordshire, North London & surrounding areas. We deliver expert advice, precision installations & long-term solutions for high-end homes & professional projects.

Sable Projects

Sable Projects is a trusted plumbing, heating & renewable specialist serving Hertfordshire, North London & surrounding areas. We deliver expert advice, precision installations & long-term solutions for high-end homes & professional projects.

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