diff --git a/src/Thermal/HeatTransfer/ideal_components.jl b/src/Thermal/HeatTransfer/ideal_components.jl
index 70dfe446..890382ca 100644
--- a/src/Thermal/HeatTransfer/ideal_components.jl
+++ b/src/Thermal/HeatTransfer/ideal_components.jl
@@ -201,13 +201,19 @@ This is a model to collect the heat flows from `m` heatports to one single heatp
 
   - `m`: Number of heat ports (e.g. m=2: `port_a1`, `port_a2`)
 """
-@component function ThermalCollector(; name, m::Integer = 1)
-    port_a = [HeatPort(name = Symbol(:port_a, i)) for i in 1:m]
-    @named port_b = HeatPort()
-    eqs = [port_b.Q_flow + sum(k -> k.Q_flow, port_a) ~ 0
-           port_b.T ~ port_a[1].T]
-    for i in 1:(m - 1)
-        push!(eqs, port_a[i].T ~ port_a[i + 1].T)
-    end
-    ODESystem(eqs, t, [], []; systems = [port_a..., port_b], name = name)
+@mtkmodel ThermalCollector begin
+    @structural_parameters begin
+        m::Integer = 1
+    end
+
+    @components begin
+        port_a = [HeatPort(name = Symbol(:port_a, i)) for i in 1:m]
+        port_b = HeatPort()
+    end
+
+    @equations begin
+        port_b.Q_flow + sum(k -> k.Q_flow, port_a) ~ 0
+        port_b.T ~ port_a[1].T
+        [port_a[i].T ~ port_a[i + 1].T for i in 1:(m - 1)]
+    end
 end
diff --git a/src/Thermal/utils.jl b/src/Thermal/utils.jl
index 22c379a0..74e9f3b4 100644
--- a/src/Thermal/utils.jl
+++ b/src/Thermal/utils.jl
@@ -1,14 +1,13 @@
-@connector function HeatPort(;
-        T = nothing, T_guess = 273.15 + 20, Q_flow = nothing, Q_flow_guess = 0.0, name)
-    pars = @parameters begin
-        T_guess = T_guess
-        Q_flow_guess = Q_flow_guess
+@connector HeatPort begin
+    @parameters begin
+        T_guess = 273.15 + 20
+        Q_flow_guess = 0.0
     end
-    vars = @variables begin
-        T(t) = T, [guess = T_guess]
-        Q_flow(t) = Q_flow, [guess = Q_flow_guess, connect = Flow]
+
+    @variables begin
+        T(t), [guess = T_guess]
+        Q_flow(t), [guess = Q_flow_guess, connect = Flow]
     end
-    return ODESystem(Equation[], t, vars, pars; name)
 end
 Base.@doc """
     HeatPort(; T = nothing, T_guess = 273.15 + 20, Q_flow = nothing, Q_flow_guess = 0.0, name)